Anything from DEI will be more than good. Depending on which line you go with, some have 1 year warranties (the cheaper ones like Valet), whereas most of the higher end DEI brands (Python/Viper/Clifford) will have a lifetime warranty on the brain as long as it is bought/installed by an authorized dealer. For a very basic setup though, any of the other big name brands would probably do you fine as well, like Autopage, Compustar, whatever, although I also have a personal preference for DEI.

Assuming your info is correct and you are located in St Pete, Luke81 on here owns a shop in Clearwater, or if not, MCOR Automotive would also be a good choice up in Land O Lakes.