so what dont you like about IE7 and why do you like FF is you are a FF user? IE7 looks great, you gotta get used to the change, stay up on technology, updates, security, etc.
I would say that no matter what you do, DON'T go back to IE6. That's probably the worst thing you could do. I would recommend you either stick with IE7 or try out other browsers like Firefox, Opera, etc.
I personally think that the IE7 layout is a lot better than the IE6 one. I would say try it out for yourself before you make a judgement on it rather than just listening to the opinion of one person.