Looking for a bike that's squishy and fast on the downhills, but light and spirited on the uphills? This is a pretty good choice. I don't think there will ever be one bike that can truly do it all, but my god they are getting close. I've put around 100 miles on the bike so far all on XC trails, and it has felt very comfortable in every situation I've got it in. Like any bike it takes a minute to figure out what works best. For me, I found that keeping my weight forward was crucial to keep handling sharp, in comparison to my previous bike (banshee rune) which was a bit more DH oriented and didn't penalize me so much for hanging off the back.
Getting on a tangent here... anyway, I am super happy I went with the Tracer 275c. It is the only bike in my stable for the summer, and I look forward to everything from light shuttle duty, to local enduro races, to all day epics down in southern Utah. And of course my typical days, which are simple XC rides after work. Do yourself a favor and take a serious look at this one.
It also doesn't hurt that this Pro build is one of the best builds you could think of. The big win being the rare combo of sram 1x11 drivetrain yet shimano brakes. Then it's topped off with the clean and effective reverb stealth and one of the best value wheelsets on the market, the stan's flows. You'll notice I did put Enves on mine since I had them from my previous bike, but I have also put a full season on this exact stan's wheel and they are great. The advantage of Enves is noticeable, but if you are understandably not looking to put that extra hit on your wallet the Stan's ride great and will not hold you back in any way.