Rocktron X-tune, tunes accurately and fast, what more can you want. Well - to get the damn thing to work with my other pedals! For some strange reason, as soon as I have any other pedal hooked up at the same time, it behaves like it's broken - goes on and off by itself, loud popping sounds come out of my amp every time I engage the footswitch.

But use it with no other pedals connected - it's great!

I don't know if it's demanding more power than my One-Spot adapter can handle, but even with only one extra pedal powered up at the same time, the same problems happen. Aaaargh! I guess I could try it with just a 9 volt battery and see if that works better. Still, I hate depending on batteries in pedals. The batteries always run out at the completely wrong time - like in a middle of a gig.