To be clear, this is not meant as general criticism of these tools, they have lots of value to offer but this does reinforce the challenge of using them to make decisions in areas that are not well documented on the general Internet.
Google Bard, which just went public, recommended both Dahua and Hikvision:
*******-***** *********** ********* *** *** **** cautious ********* **** ****** ****:
*** *** *********** *** *** **** ** ****** a ************ *** ** ******* ********* ******* *** ************* ** **** ********* ******* **********?
*** ****** ** **** ** *** a *** ** ****** *********** ***** law *** ******** **** *** **** well ********** ******* *** **** ***** and ****** *** **** ***** **** time ******** *** ********** ***** *******. By ********, ** **** *** **** as **** *********** ** ********* ** optimize ***** ***** **** ***** ************. I ** **** ******* ******** **** happen ** ***** ***** ********** *****.
********?
** **** ****'* *********, ***** ** would ** ****** ** ***** *********. ;)
***, ***, **** ********** *** ****** these **** ******* **** *** ****** of **** ********* ** * ***** is **** ******* ** *** ** to ****.
****, ** ** ******* ** **** like ****, * ***** * *** of ****** *** ******** *** ******** expensive ***** ****** *** ** ***. I'm *** **** ** ** **** see ***** ******** ** ******** ** be ********* ********* **** *** ******* some *********** ****** ** *** **** are *********. **** ****** *** **** start ******* ********* ******* ** *** topics *** *** **** **** **** ad *****? ****** **** *** ****** crazy ** **** *******.
** *** **** ****, * ***** see ** ************ ****** ** *** manufacturer ****** ***** *** ******** ***** for ***** *** ********* ***********. ******* a ****-******* *** ** **** ***** the ***** **** ***** *** "***** products ****** * ******* ** * county **** **** ** ********* ******* Milestone, *** ******* ** ******* ***** system? **** *** ********* ********** ******** and ***** ***". **** ***** ****** a **** ****** **** *** ************* with ******* ***** ***** ** ******* efficiently ******* **** ******-******* ***********. *** costs ** * ******* ** ***** expensive **** ** **** * ******* LLM ******* ***** ** ****** ********* in **** ****.