I have the "Tactical" 5" barreled .40S&W model. Unfortunately I've only had time to get it out twice, so can't speak too much about reliability. It's very comfortable to hold, and points naturally. The grip shape is more natural to me than the Glock style, though I'll probably have a Glock 17 someday anyway.
I do still find the recoil kind of snappy, but it's the first .40 I've shot (and still the only one), so I'm sure I'll get used to it. The finish on the slide is definetly not as tough as a Glock ... I had scratches on mine before I even shot it once, just from wiping it down with a silicone cloth. That's not a major concern for me, though - just makes me more willing to use it hard, like it should be used.
I like the metal magazines and sights over the Glock's plastic ones. The sights are also affixed with the same dovetail as Sig pistols, so they're interchangeable with any aftermarket Sig sights.
Bottom line, it was a steal for the price they're going for.