In reply to Tim Lowe:
I bought a 901 in 2017, after having a few years off mountain biking. I was very experienced prior to that.
I bought it off the back of loads of good reviews and was really disappointed. The geometry was stable, while the wheels were on the floor but it was too long to throw around. I always felt like the bike was restricting me and slowing me down. I sold it less than a year after I bought it.
I now have a Trek Fuel EX and I love that.
But we all have different body shapes and riding styles. As others have said, try and get some test rides done.