You don't specify if you're riding a 2-up or separate sleds. If a 2-up, I use the Moto-comm unit, specifically the the AB-1M. I chose this unit over the others for the following reasons:
1. It connects to my music (which is a 7" andorid tablet, which also functions as my GPS map, etc)
2. It has PTT for both rider and passenger (to xmit to the other sleds in the group).
3. It connects to any standard GMRS/FMS radio from Motorola, ect so you can chat between sleds and use the radio for any other purpose you desire in the off season.
It's certainly not the most advanced unit out there (and I believe is now discontinued), but for my requirements is pretty much the only game around.