I would strongly recommend you NOT choose the Touch2 model. It may work, but we know there are problems with some of the Touch series. See below for other known issues.
FlexiSPY supports most Windows Mobile phones as sold by Verizon, AT&T, T-Mobile, Sprint and other networks. For a general reference of available models, please go here http://www.microsoft.com/windowsmobile/en-us/devices/smartphones.mspx
FlexiSPY supports most of these models. Some non-standard designs may not be fully compatible.
At this time, the following are the only known WM models which are NOT compatible:
HTC Touch, HTC Diamond, HTC Touch Diamond, all Palm models, Samsung Blackjack I, Samsung Blackjack II, Samsung Jack.