I've been thinking about buying an Ibanez Tube Screamer reissue. What kind of sounds can you get out of 'em, and are they worht the money? Anybody know?
The tube screamer was designed when amps (marshalls) didn't have quite enough gain (without turning them all the way up). So the Tube screamer and also the Boss overdrive were meant to give you the extra boost (by adding gain and a little distortion) to get you over the hump. This isn't a pedal that will turn a clean amp into a big distortion-fest but it will turn an overdriven amp into something you could solo with.
It should also be mentioned that alone in a clean channel it can produce some decent, fuzz-like sounds. Personally, I never liked them much, but if you're looking to do what Far mentioned, then it's worth a look.