Asmodius, I have the 9.5 because I also hit a high ball. A friend told me recently that they had read an article which stated that the optimum degree driver for most amateurs is 15. I believe it is something to do with height = distance, etc.. However, I know that if I used a 15 degree loft, I would be playing my next shot 10ft further back. But!, on this point, a 10.5 degree is not likely to be costing you any distance.

You mentioned that you had your previous club for some time. I'm speculating that the club head is considerably smaller than the R5 N 450cc. If this is the case, you may be teeing the ball up too high trying to compensate for the larger head. I regularly see golfers using astronomical tees, and it looks like the ball is on the 'Eiffel Tower'. Try lowering your tee. I generally use a white castle tee and this is despite floating the club head. Mind you, 270yds regularly is good enough for anyone so don't change too many things.

I agree also that the R5 N is a fantastic club. It has made all the difference to my driving. I'm just trying to build up the confidence to have a 'crack' of the fairway with it. Good golfing !!