I picked up a Line 6 MM4 used today at GC on a lunch break. I didn't have much time to play it, so I just played a minute on each sound, and it seems like a pretty cool unit. I thought the vibe and trem were OK on my first impression. What is your guys' feedback on this pedal. I picked it up used in great shape for $99 w/ the power supply...Did I get a good deal?