Not everyone has issues, and the issues that do show up are usually pretty minor and the devs working on the roms have fixes up on their site right away to fix any problems that arise. All I can say is try some roms out, easy to go back to where you were and you might be surprised as to the ease of use. CM7 and MIUI in my experience have been relatively very good in most cases. Yes issues do happen but oh well, that's the fun part in rooting and trying out new features...just do it. If nothing else you'll have something to compare with what you're using now.