Just thought I'd write a quick review for the 26" Nukeproof Mega TR frame. I've only had it for a couple of months so can't comment on longevity (or how it rides in the dry) but I have ridden it a few times including Gisburn Forest, Forest of Dean (uplift downhill day) and Swinley Forest.
Size wise I'm 5'9" and went for a medium. It's on the shorter side for long xc rides but is perfect for everything else.
I read a lot of reviews before I bought it and the vitalmtb one is definately most similar to my experience. In summary it pedals well with little feedback, feels plush over smaller stuff and ramps up nicely to take bigger hits. It jumps more like a hardtail than any other full sus bike I've ridden and I find the head angle (with 150mm Rockshox Sektors) a great compromise between too slack to get up hills and too steep to enjoy the descents. With the maxle rear it is pretty stiff as well.
I'm really enjoying this bike and would recommend it if a) (like me) you ride mostly trail centres/local woods but want something strong and fun enough to use for occasional uplifts and a trip to the Alps b) you want a full sus to compliment a downhill bike or c) you love your hardtail but feel like you're getting too old to take a whole day in the saddle.