UD: TC M-One XL is awesome! I just bought it two days ago and I am very impressed with the reverb. I now have a TC VoiceOne, TC M-One and Yamaha 01V for effects.

Luis: I have never used Lexicon, but you really can't go wrong with TC units. I have heard a lot about M300 and if it uses similar effect algorithms as M-One, I would get the M300.