I suspect I'm gonna be getting a new amp for Christmas (B-52 AT-112 ). At some point after I have a decent amp, I'd like to get a hold of some decent pedals. I'm curious about harmonizers and octave pedals. What are some decent ones that won't set me back much (think $150 tops).

Thanks guys!
If you're not really into Tom Morelloish whammy squeals, you might be better off with a straight harmonizer, like the Electroharmonix POG. Otherwise the Whammy is a solid choice.
Digitech Harmony Man
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