I've used one for several years - the EX is essential for compression/reverb in mastering afterrecording.
most of the tracks on
http://www.mp3.com/davidkilpatrick are VS880EX, mainly with a Yamaha 12/4 desk feeding four channels separately, and a little use of multitracking and editing - though what I do tends to be natural acoustic, just overdubbing mandolin, zouk, bodhran or second guitar part over 1st guitar part.
It is a very clean system, 4Gb replacement disks are hard to get, but you can plug in an external SCSI and use that instead - any size seems to be OK if you partition it into 4Gb partitions (you can apparently do the same with a larger internal IDE disk, but you have to prepare it off the machine, and I can't get anything to work that way).