As an integrator, the "well known" security shows are going to be of little benefit to you. ISC West is expensive, and probably out of your budget, and it attacts primarily other integrators. There are a good number of end-users in attendance, but the ratio of end-users to integrators is too low (IMO) to be worthwhile, and then a number of them are out of your target markets.
The big ASIS show is slightly more end-user focused, but it is still not exclusively an end-user show, and being that it is a security show, your visibility as an integrator gets watered down unless you have some very specific niche ("We are the cruise ship security specialists") in a segment that is not highly price sensitive.
Based on my experience working with lots of integrators over the years on trade shows, your best option is probably to look for shows in the areas that you have a presence in that align with specific area of expertise.
An example of the above, we've had a lot of integrators over the years that use our analytics to serve auto-dealerships. The basic pitch being that we use analytics and live remote monitoring to catch after-hours theives coming to steal parts from vehicles (airbags, spare tires, nav systems are all fairly portable and easy to sell). Sure, you can make that pitch as an integrator at ASIS and hope that some auto-dealership security people wander by. Or, you can setup shop at ASIS with your "full pitch", and hope that when the auto-dealership guy comes by you're not pitching your cruise-ship security business unit and he wanders off thinking you can't do much for him. But if you get a booth at a NADA show, you're going to be one of the few guys NOT offering all the same stuff as the others. You're going to stand out more. And you can focus your pitch and presentation to something that 90% of the attendees have an interest in, instead of something that 2% of the attendees have an interest in.
ISC East was mentioned above. That show is a little bit of a mixed bag (in a mostly-good way), but is still, IMO, too integrator focused (meaning that it's mostly manufacturers trying to sell to integrators) to be worthwhile exhibiting AS an integrator.
Some other thoughts:
1) Talk to the manufacturers that you have your best relationships with. Larger manufacturers will often help their better integrators with shops. It might be lending you equipment for demos, people to assist with the show, or even co-marketing dollars. In the past (at VideoIQ) I've given some of my larger integrators $5,000 or $10,000 in cash or "store credit" to help support their marketing efforts at targeted shows.
2) Make sure you FULLY understand the cost of doing a show. Really, you should already have a good handle on your basic COCA (cost of customer acquisition), so that you can determine if spending $20,000 on a show to get 100 leads and 10 deals is a worthwhile expense or not, relative to other ways you could spend that same $20,000. By FULL cost, I mean booth fees for floorspace, booth rental (or pop-up booth cost, I spent $5,000 on a pop-up booth recently and it's really nothing spectacular), cost for people attending (hotel, meals, time away from other work), electrical fees, internet fees, shipping fees, printing fees. A "small" show can easily be $10,000.
3) Make sure you have a good system in place already for tracking lead sources and conversion times. In line with the above, if you don't know where your leads are coming from, how long they take to close, or other data, it will be hard to measure your trade show impact.
4) Spend some time up front determining what you want to get out of a show before you sign up. EG: we want to launch our brand in the Chicago market and collect at least 250 new leads. To do this we will highlight our key strengths A, B, C, etc. Don't just say "we'll throw together a booth at the next scrapyard tradeshow and the customers will flock to use naturally".
5) Your show starts 8 weeks in advance of the exhibits. It takes a LOT of time to plan properly and ensure you have a polished appearance. Doing a half-assed setup, especially if other exhibitors have a clean and manicured appearance will make you look small and weak and will turn customers away from wanting to talk to you. You don't have to be the biggest booth there, but if you can't put in a solid showing, you might be best of skipping the show. You need to send emails to your contact list a couple of times in advance of the show, letting them know you'll be there, the standard "come see us" message you've probably gotten from manufacturers attending ISC West. After the show you send the "hope you made it to FooFest, it was a GREAT show for us (even if it was dead ;) ). Blah blah blah." This way even your customers or leads that did not attend the show see how your business in growing and doing new things like exhibiting. Leads that might not have had much engagement will see the nice picture you included of your booth and all your happy people staffing the booth and will assume you're a "solid" company.
6) Similar to the above, you don't want a location on the "outskirts" of the show (IMO). Try not to get lumped in with all the small booths from weird companies. It's kind of like real-estate Location, Location, Location. Doesn't have to be right upfront, but you can be elevated (or pulled down) by your exhibit neighbors.
7) Once you've signed up, talk to your manufacturer buddies again and see if you can get a local sales person or manufacturers rep to help man the booth with you. It helps to have more than 1 or 2 people, so that you can take shifts, handle conversations that crop up where a potential customer wants to get into a more detailed/drawn-out conversation about something, and so on.
I could probably write a book on this "How to do a security trade show", but the above are some good starter thoughts.
TL;DR Skip ASIS and ISC, look for regional events that are more vertical focused and hone your message for those shows.