The thing that struck me about the Lex is the horrible user interface and the sensitivity/insensitivbity of the knobs. The way the software responds to user tweaks makes the settings jump too quickly or not enuff. I do like the addditional knobs for tweaking tho. I haven't evaluated the reverbs in the unit becuase it belongs to my brother. I already had an M-One so I recommended we diversify and told him to get the Lex 500. I see him suffering trying to make the thing work with his 4 track setup, but maybe that's just becuase he isn't very technical.