I decided to move from my tried and true 26 mtn bike to a 29er. I had heard great things, did my research, and decided that Trek Fisher was the way to go on a 29er. He pioneered them and has worked every year since to perfect them. I wanted to get the Superfly carbon but it was a bit out of my price range for now. I decided on the X-Caliber, solid AL frame, x7 parts, Rock Shox fork, and Avid hydralic disc brakes. My first ride out I realized that all the hype was completely true, it was fast, smooth, and had a very confident feel. It was like driving a monster truck on the trail, the big wheels just rolled over the small stuff that I used to feel on my 26er. I put some Schwalbe Big Apples on their to cruise around the city and they are great. Fast, grippy, and allow me to jump off stuff and not worry about any damage to the rims. All in All I would recommend the X-cal or any Trek Fisher 29er hardtail out there.