Mr8hd
YEs, I am pretty happy with it. I use it as a recorder, and transfer tracks to pc for mixing. I and my buddy regularly use it to record our guitars and vocals, so the 4-simultaneous inputs get regular use - that's really why I bought this unit. I find that the transferred tracks are very clean coming off the unit.
I run my signal thru a Mackie mixer, to take advantage of the better preamps, then out the insert jack to the MR8HD where I have to add some gain as well. I haven't been very impressed with the sound quality using just the preamps on the unit, but this is really my only complaint.
I find it easy to move and add tracks, so we'll often wind up with 6-8 tracks on a song before it gets to the PC.
I also use it for solo recording with condenser mics, and it does a good job here as well. I haven't used any of the effects.