Very true. Quite a few happy customers with the OC designs. I also know a few people who had their Sachs revalved several times in Australia and never quite gelled with them. Possibly more a tuner issue though.
As Ando said, evaluate what and how you ride. Bang for buck is the revalve. TTX even on special will be $700usd plus another $100 for springs. You get a great fork, but still no guarentee that the valving will suit your terrain/requirements. Add to that Ohlins specify more frequent service intervals (not that I have strictly followed them.. oops), and you special tooling required to even do a simple oil change, plus a nitrogen charge for each leg. So your running costs are going to be higher too. Probably why I haven't done mine as often as needed. They'll be done soon. I'll take photos!
Now personally, I have been stoked with the 2011 TTX inserts in my 2010 model bike. They track well, steer well, the clickers make a difference, the bike holds itself up in the stroke, but still soaks up the little hits and the large alike. I think they took my riding to another level, and have even saved my bacon a few times hitting things that the Sachs would have jarred my whole body on.