For on the fly keypad programming Kenwoods, For APCO-P-25.... Motorola, and EFJ... a few Kenwoods, For rugged tough dependability Motorola, and EFJ.... And if you ask about Lo Band- ALL of them!
For M/A-Com TRS's.. thier is only M/A-Com.....
For small palmsized HT's.. Motorola has some but in my personal opinion I prefer the more traditional full sized HT's.
One piece, easy remove for changing vehicles, or for anti theft- Motorola, Kenwood, and I believe M/A-Com has a model too.