Going to try new ROM, any advice

[dkranes]

OK, here's the deal. I'm running an HTC Touch Pro on Cricket's network. I'm using a ROM that Drunk from HOFO crated (thanks!!!). I manually programmed the phone in epst as well as the registry and loaded a cricket PRL. I have everything working - exchange email through my company, sms, mms, wap. Everything is great except battery life (oh and don't get me started on gmail, lol). I'd like to check out a few other ROMs to compare battery life. I don't need help flashing or anything - I used the SD card method and will continue to do that.

What my main question is - considering that everything is currently working, what am I going to break by flashing to another ROM?

TIA for any help!