I’ve never ridden the 27.5. I have 3 rides on the 29’er. Unfortunately after the first ride the rear shock blew. YT sent me a replacement ASAP but now the frame has developed excessive lateral play in the linkage. Waiting to hear back from them still about a solution. Hoping to take it to Whistler in 2 weeks for a 16 day trip. It was the reason I bought the bike in the first place. The couple rides I have gotten in, have been great. Very balanced, progressive suspension, and it begs to go fast. The build spec is awesome as well. I have the CF Pro Race.