Well, so far I've bought (but not kept all of them) a few Benchmades.
910S (returned because I got annoyed by the serrated edge)
910 (got it not long ago, I plan on keeping this guy)
730 (Sold to someone on BFC)
The Strykers were perfect, one was returned because I was annoyed by the serrated edge. My second Stryker was extremely stiff when I got it, it was not as smooth as the first one I had and at first I was disappointed. Well, I found that what happened was that BM tightened the pivot a little too much. Loosened it an lubricated the parts and its just as smooth now.
The Ares was an excellent knife too. The axis lock is awesome, but I sold this guy because I wanted a tanto point (I love tantos). Also, there was a flaw in the design IMHO. They forgot that contoured handles made the pocket clip too tight. Not a QC error, but an design flaw that should be fixed. Some people like really tight clips though. I don't.
I bought my Benchmades from
http://www.DiscountKnives.com and they came perfect everytime. Just make sure you include a comment in your order saying to inspect for QC errors. That way Brian knows you're a picky guy.
-Chang, Asian Janitorial Apparatus