Without a doubt...this guy:



STANDARD HORIZON
HX460S Mini-Handheld VHF Radio


I bought one a few months ago - I've had it on for 8 hours straight with no signs of battery weakening. The scan feature is very fast and can even include weather channels if you want to receive weather alerts. Rechargeable (12V or 110V), recharge cradle option...etc. Worth every penny.

I still want to know, however, why nobody makes a handheld VHF radio that does not use knobs at the top - those things are a pain in any drybag!