I dont rate this unit very highly, I bought one last year, and it sits mostly unused in my rack.
I also bought the M300 (TC Electronics) and, although both units are similar (in price and quality) I would rate the M300 higher than the MPX-100.
I do however use the units to add reverb to the headphone mix when recording vocals, and I have used both units when mixing on my analogue board.
Basically, you get what you pay for. i would say software reverbs would be of better quality, although CPU resources are used.
I cant remember exactly what I paid for my MPX-110, something between US$200-300.
Save your money and buy a poco if you want some nice reverbs, or perhaps look for an old Yamaha Rev-5. Spend a bit more and get something decent.
Good luck!
