I can't really give you a comparison to other devices. All I can tell you is my experience. First, having 24 analogue ins and outs is really great. The sound has been fine and I have had almost no problems with it at all.
There is really nothing else like it on the market. Also, you can use the 96khz setting and it sounds great. I am using it with a Mac G5 dual 2.0 and I can pile on the tracks, plug ins, audio, midi, what have you and it just keeps on going. Mixing options abound.
What else can be said. What else would you buy that can do what it does.
It is a fine Piece of gear. Not very popular around here but still very good and reasonable priced.