I have most of the Little Dot amps, with the exception of the VII. You definitely get a lot of bang for your buck. I use my MKIV SE most of the time, and I like it's flexibility as a preamp for my speaker system and a headamp.
The service is good, but if you have a problem you have to ship it back to China. I sent a DOA DAC-1 back to them on the 14th and it is looking like a 30 day turn around before I get it back.
That's probably the only frustrating part of dealing with Little Dot, and I guess some of the other Chinese companies.