Well I took the plunge and purchased a 27.5/650b bike. After lots of research, asking questions and demo rides I chose the Pivot Mach 6. I went with a fairly simple build. XO1 1x11, with RaceFace Turbine crank and Narrow/Wide 30t chainring. I also went with Shimano XT brakes. Fox Float-X shock and Rockshoxs Pike Fork. I put a Giant 150MM dropper as well (more on that in another review).
Besides those items the bike is stock, DT Swiss M1700 Spline 2 wheels, Pivots proprietary handlebars and WTB seat. Maxxis High Roller II tires front and back.
I am coming off of a Knolly Chilcotin, hands down one of my favorite bikes. I never had any issues with my Chili except for the fact it had 26" wheels and was a little on the heavy side, again not a big deal to me but it was getting harder and harder to find good deals on tires. Also high quality wheelsets are getting harder to come by. I felt that if I was going to get any money out of selling my Knolly it was time, in reality I was a little late.
So, the Mach 6, a few things that were very noticeable was the weight, coming in at 28lbs with pedals it was 3 pounds lighter than my Chilcotin. It was very obvious on climbs and when pointed downhill, the Pivot felt a lot more responsive (snappy). I think the best analogy would be, my Chili was like a dragster, point it in the direction you want to go and pin it! While the Mach 6 is a Rally Car, very fast and precise, the drivers ability to control it has a lot more to do with how fast and in control you are.
As for climbing both platforms climb very well, the Pivot Mach 6 w/ DWLink suspension is amazing, the Knolly 4X4 is no joke either but when it comes to climbing, if you take everything else out of the equation, weight, rider ability, wheel size etc.. the Mach 6 DWLink is a better climber. I hardly ever lock out the rear suspension unless I am making a steep long fire road/road climb. Very little pedal bob and my wheel seems to keep traction just as well as my Knolly did.
The Pivot Mach 6 feels amazing and light, the carbon frame is very stiff and truly gives you the "on rails" feeling in corners. Being a lighter bike it also give you the ability to easily move it with you feet and body in technical sections, again I think this is something that has more to do with rider ability, but with 6" of travel the bike is still forgiving for poor line choices...
All in all the Pivot Mach 6 is an amazing 6" travel all mountain/enduro bike. I have been asked many times if I will miss my Chilcotin, at first I thought I would, but in all reality I am much happier on my Pivot Mach 6, not only is it lighter and feels great under me it has a wheel size that is much easier to upgrade and work with.