Since VM has this phone on sale for $19.99, I was considering getting one (or two) for media/MP3 players (ONLY). However, the battery life has me a bit concerned. Obviously, I would have GPS, data, and (usually) WiFi turned off (and could run JuiceDefender in a fairly aggressive mode). Would this phone be suitable in this scenario? I'm curious as to whether running a custom ROM (i.e. Harmonia 2) improves the battery life at all (I currently run that on my Optimus V and get great battery life).

I don't mind charging every other day (or so), but certainly don't want to have to charge every night, and then have that charge only last for a couple of hours of MP3 playing.

Thanks in advance!