I own an MOne XL and I got to say I'm pretty happy with it. I'm no big time producer or studio owner, but I've found the presets to be a good start and only minor tweaking is needed to get the rest of the way. Generally I use it as the main verb for vox and snare, and there are plenty of other effects to choose from. The verbs seem to compliment the sound while not distracting from the original source sound. Then there's the multiple routing options which are pretty handy in both live and recording situations. I'd bet some will say (and have already said) the Rumour by Kurzweil is a better box for verbs. And others would say the cheaper Lexicon boxes sound nearly the same as the 550. But I find the MOne XL to be plenty flexible and rather good at the price point - perhaps the better all rounder. By the way when I mention bang per buck, I got mine on ebay. The street price changes the equation more than a bit.