I went with the TRX-2 in my latest install because of its awesome P25 Phase II simulcast decoding at the fact that it has a legit remote head.
While it is a nice unit, I regret it for mobile use.
The fact that it won't turn on when power is applied, and the routine to turn it on manually is convoluted (hold the power button down, until it tells you to let go), and then after that it won't start scanning until after the welcome screen, initialization, and verifying SD card data. It is completely ridiculous -- I should be able to just get in and go without having to fumble around with this stupid routine to turn the unit on.
Whoever thought this would be a good way for a mobile scanner to function needs to get the boot. For home use, this would be acceptable, but not for mobile.