Whitney and I use these ones:
www.amazon.com
They're OK. The rechargeable batteries tend to die at inopportune times, but I think that's a problem with rechargeable batteries (and not being 100% awesome at remembering to always be recharging them/not having a thing besides the radio itself to recharge it in) and not the radio.
I sometimes get lent something that looks very much like these ones:
www.amazon.com
Which are definitely nicer/more solid/more ergonomic/you can adjust the volume by knob rather than button (no beeping, therefore better for stealth if you don't have a headset). I don't know how their battery life is but my impression is "better."