Have you looked at
www.knifeforums.com ? There is an overload of info on knives for all purposes there and quite a few people selling in the "knives for sale" section that haven't even really used em (i.e. occasional great discounts on basically new stuff). In between them, this forum and
www.candlepowerforums.com its a miracle i get any work done at all...
In researching the ritter grip, one of the big points that kept coming up was the strength and popularity of the AXIS lock mechanism. It is supposedly quite well thought out. I was torn between the S30V ritter grip and the standard $65 154cm steel grip which is also supposed to be a fantastic overall knife. To be honest, I probably would have just purchased the standard, hollow ground 154cm grip if i hadn't just sold one of my spydercos ($40 extra bucks burning a hole in my pocket + rave reviews of the ritter = another order for aeromedix and an empty discretionary spending fund for alex

)
good luck!