I guess I should answer my own question, huh?
I've used a lot of cheap mics. The ones that digust me most are the ones that Musician's Friend throws in when you "buy such-and-such and we'll give you a free cheap mic!"
I hate almost any ball mic (except SM58). Any mic that costs less than $80, I generally don't trust. My dad had a really neat Sony stereo dynamic mic which is now broken in my desk drawer ...but it sounded really great on guitar. It sucked on anything else, but it really sounded warm on guitar. I should try to fix it.
Isaiah