Had one and sent it back but you may want to try one. The preset EQ and compression made it sound way too trebly for me and caused feedback problems I didn't have before. Theres supposed to be a way to change the setting but I couldn't get it to work on mine. The echos and reverbs are good. The Pitch Correction is subtle and to me the best part of the unit.
I should of kept it but my BK9 gives me a decent reverb and EQ built in. As for the pitch corrcection hopefully I sing on pitch enough so as not to need it although it does tighten up your vocals. I also decided I just didn't want to mess with more wires and a 9 volt adaptor.
If you have no other effects on your mic its well worth the price.