This bike so much fun! I know 29er's are all the rage these days, but don't you remember how nimble and quick 27.5 was on the downhills? How fast you could hit turns? Those jump lines felt so comfortable. Your confidence was at an all-time high with those fun 27.5 wheels. The 5010 is all this and so much more. There is a flip chip that allows you to slack the bike out a bit, this is my preferred set up. The bb gets a little low, pedal strikes are surprisingly easy but the slightly slacked out geo feels so great! Flow trails are a blast, rock gardens become playful. I shoud mention also that this bike climbs pretty great as well! It's not a Santa Cruz Blur or XC race bike on the way up, but with its mid travel and healthy weight, the uphills aren't bad. Plus you can lock the shock out for some extra efficiency.
Bottom line, one of my favorite bikes on the down for mid travel, its super fun and playful, quick and nimble. For the uphills, it's a bike! Going uphill, you're the motor, it'll do as good and go as fast as you can push it! I am 5'10" and ride the medium but could ride a large as well.