I'm 5'11 and like the medium. Others would prefer the large. All the specs are on the Zerode website. Just measure up your Devinci and compare. http://www.zerodebikes.com/page/Bikes/
Gotcha yeah they are very nice. The next version is supposed to lose almost 1LBS which will be nice. I have the Emerald on the trail bike I am building now. It is literally 1/2 the price of a Pike and it comes with oil in it.....