i have a G TECH pro competion. it works great!!!!!!
also you said about the way it seems to run better cold, the zex system runs off of fuel supply too. it has a micro computer to only allow the right amount of nitrous for the fuel you have there. when its cold, the coolant sensor richens up the fuel by lenthening the dwell time( on tme) of the injectors. if you go with a dry system, i really think zex is the one to go with for the bux. not sure if venom makes a kit for us yet but they are quite costly in comparison.
i looked at summit racing cat. today and they have a manufacturer called motorvation that custom burns chips for gm with any mods you have. it cost 398 bux. after you order it a tech rep from motovation calls you and takes all the mods you have and custom burns a chip for that. something i really think i might do because then i can use the 95 TB i have that is ported and polished to match my new sc .