I've done some rom hopping and have pretty much settled on xtr3.0.3. It seems very stable and trouble free. Whenever i've flashed a new rom however i've done a wipe beforehand. I can't remember the titles of each but there are four options under wipe. I do the first one (wipe data/factory reset) and im wondereding if and when i should use the other three. Also should i only do a wipe before flashing roms or periodically to keep the system clean?