PROS: Great drives, many parameters, easy interface.
CONS:
1) Many parameters. I got anxious after a few days of use and couldn't stop tweaking. After A/B-ing my analog effects, the MS3 sounded great, but not as great as the analog ones.
2) Gap between patch changes.
3) No spill-over delays or reverb.
4) No Midi IN.
5) Cumbersome interface: lots of searching for parameters, small screen, impossible (switch) assigns.
After a few months I sold mine.