As far as "trusting in the brand", I'd rate Dahua right alongside the best of anything else I've worked with. I've had some minor glitches with a couple cameras (had one or two that bricked during a firmware update, and sometimes they don't come back after a quick power-cycle and you have to power them down for several minutes) but nothing worse than anything else I've worked with.
We used some rebranded HIKs a few years ago that were just dreadful (remote zoom/focus on one model didn't work on 7 out of 10 cameras out-of-the-box, another model had terrible powerline noise in the image), but lately they've all been good.
The Axis cameras we use tend to have about the same VERY minimal failure rate... worst I've had was one P3384 where the iris drive was disconnected, but I fixed that in the field... and every now and then one will do a factory reset after a power cycle, which appears to be a well-known issue.
We used IQ Eyes for years and they tended to be really solid aside from the odd failed power board in the 501/511 line (easily bypassed by adding PoE).
As an installer, I love CNB, IQ, and Axis's dome designs... for the longest time we were using CNB's "Monalisa" series of analog cameras for their fantastic low-light capability, and I wish they'd brought that technology into the megapixel realm.
On the other hand, also speaking mainly as an installer, my most-hated brands are Pelco and Panasonic, for cameras that seem to have been designed by engineers who have never actually installed a camera in their lives.
And my issues with Arecont cameras have been well-documented here and elsewhere; they have a special level of contempt with me.
So... yeah. Trust that brand.