I've had a few bikes over the past year: Hightower LT, Pivot 5.5, Norco Sight 29 and like this bike the best. I ride in mountainous terrain that is rocky/loose with lots of climbing and descending. Without a question, this bike climbs so well and you don't feel that loss of energy when you stand up or really give it gas. On the downhills it feels very controlled and plush. I did put an X2 shock on mine because I find the adjustability is worth the price. I opted for this bike over the sb130 as a) I wanted more than 130mm travel but less than 160 and b) like the geometry better than the super long fit of the newer models. I've rarely hit my pedal on technical sections. My only criticism of this bike is the internal routing is dated. I can deal with the PIA of getting cables through it, but wish the cable securing ports were more secure (something with a tightening screw that really sealed off the port except for the cable...like what Pivot does on their bikes). As such it is easy to get water in the ports when washing your bike (so I tape them when cleaning). The second thing is this bike does run on the short side. If you're even close to between sizes you should definitely size up (shorter legged folks may need to use a shorter dropper, I have over 2 inches of extra room on my 150mm dropper...so could easily do 170mm). I'm 5'11 with long legs so the shorter reach of the Large suits me fine with a 50mm stem, but when descending I do get that 'too far forward' feeling sometimes and have to really squat back (update 1/7/19: don't get that feeling anymore with 28% sag). I'm also lowering my sag as Yeti recommends the full 30%, which will probably help with that issue as well. I debated even going XL and using a 35 stem...which probably would have worked great as well. But everything is a trade off. What I notice about this bike as compared to my other 29ers is that the front wheel turns like a 27.5 bike. That is, it doesn't give you the feeling that the front wheel is going to fold over in a 180 degree turn. I also like that the chainstays on this bike aren't super short because when riding loose rocks that stability helps. A little harder to lift the front wheel, but with all bikes you adjust your technique to the geometry. This bike is ridiculously fast and you'll find yourself touching the brakes because it wants to scream downhill when you're not quite ready! If you're over 5'11 I'd definitely consider the XL size! Update 1/7/19: I bought a second frame (XL) to build in to a more downhill oriented bike. That's how much I love this frame....I'll have 2 complete sb5.5s in different sizes!