I came across this yesterday when searching for more info on my winchester's CBBHD 0448SPAW stepping.

http://tuneup.free.fr/AMD64/amd64step.html

I've seen on this forum that a lot of the steppings that seem to be shown as doing well on this list, also are ones that people reported as doing well here. Might be helpful for those pondering a Winchester purchase, or those wanting a cheap 3000+ until they can get their hands on a Venice.