The three HS2000s I had were two Gen 1s and a Gen 2. The extractors in all of those were identical dimensionally to that in a friend's Gen 3, but he had a pile of trouble with it FTE'ing. We compared the extractors from one of my G1s (before I sold it) and my G2 with that of his G3 and it was apparent that the G3 extractor had FAR less spring tension than that of the others, either in his slide or in my G1 or G2 slides. I had like one FTE on Wolf 9mm in the G1, and I have shot over 1300 rounds cumulatively through the the three that I had. Roger's G3 would usu. feed and extract Olympic or the PMP stuff OK with maybe 1 or 2 FTEs per 100 (not acceptable for carry, and he didn't), but it choked on other stuff. He sent the gun to SA after they started to cover the HS2000, and the replacement extractor almost needs a crowbar to flex it. No more FTEs!
IMO, the issue was one or more lots of these extractors (they look cast or MIM'd to me, and I am probably wrong - but the round "barrel" at the rear of the extractor has mold marks in it) were out of spec or poorly heat treated. They may have changed suppliers or were bringing another one on board, or such like. At the HS2000Talk.com board, it seemed that a lot of Gen 3 owners were having the problem.
Even with the higher $$$ for the SA version, it is a tough pistol to beat. It is somewhat Glock-like in features, but I like to say that it is not "better" than a Glock, but "different". For me, the HS/XD grip made the difference and I sold my G17 and G19, which grips feel like polymer furring strips in my hand (no flame; just my perception). The HS/XD grip is more like the CZ75/85 and the BHP for ergonomic comfort.
Noah