I've owned a Ural CDD since April 2006. You can see photos of my Ural
here and
here (I'm "bryan" on ICIX).
I have yet to experience any bugs or glitches. Everything has worked fine and the unit sounds great.
The nicest thing about this deck is that it's super easy to tune, and probably more flexible than any other standalone HU besides maybe the DRZ9255. Take the crossovers, for example. You can HP, LP or BP each pair of channels independently, using literally any frequencies you want, as opposed to choosing from a limited selection of preset frequencies on most other decks. Crossover slopes are adjustable too, as are level, phase, T/A, and EQ.
The MP3 browsing interface is by far the fastest and easiest I've seen in a single-DIN deck, and it plays OGG and FLAC too!
For comparison, I also own a Denford 8250 and a DRZ, but the Ural is what's in my car right now.