2006 onwards the pivot got moved from chainstay to seatstay to circumvent expensive HL license fees
Nope, he was only paying a few dollars per frame. Think it was more to do with an ongoing dispute with Tony Ellsworth.
I'm on DW version now from the HL version I had for 5 years. Both fantastic bikes. Too early to say its a big difference as I've only ridden it once in anger. Back end is certainly stiffer that much I have noticed, not that the HL version was exactly flexy. They are expensive frames, can't argue that one, but I wanted one, could afford one, really liked one when I tested it and thats enough justification for me. Best try and get a test before splashing the cash and make your own mind up.