Wow Paul your still pondering
A 29er will fly and be a better all round bike than your 26" MTB or a hybrid, spend as much as you possibly can and try and get a carbon one with top end equipment. Yes I know its extravagant but if I had just spent top money in the first place I wouldn't have had to go through the mid-price range stuff wondering what could have been. My 29er is probably too big for you, but you are welcome to try it, weighing 10Kg it rides like a dream and would be amazing on slick tyres, but I don't want that. The Scott compliments my road bike and I have exactly what I want for now, carbon road wheels next!
I find that the 26" MTB is not a comfortable bike to ride now, it is true what they say that a 29er you feel like you are sat in and a part of the bike, whereas a 26" you are sat on top of it. This theory will probably apply to you as your no short arse....
If you want to have a chat you know where I am.....