community college is worthless. i went for 3 years then dropped out. Bunch of noobs that don't know the subject teaching you. I had an engilish major trying to teach adv university physics.Really not a hell of a lot cheaper, unless you live w/ your parents.. Only thing that it might be good for is the fact that getting into some schools is a good bit easier as a transfer.
I could see where you could take the wrong classes.. maybe if you were planning your schedule around one schools transfers program and changed to another, but thats about it.