I've been biting my tongue in regards to putting a VHF on the boat (vs. on your person), because I didn't want to hijack the thread (original intent was to discuss brands/models)...
BUT, a radio is completely useless if you can't get to it, either because the boat is capsized, or floating away from you.
Tie it to your PFD, and either put it into a pocket (if it will fit), or stick it in the front, between your chest and the PFD zipper. Tying it on is important, because of Murphy's Law. Don't tie it on, and you're bound to drop it.
Mike