Same travel, totally different bike. I'd keep the 5.5, build it light, and make it a dedicated XC/trail bike. Build the Endorphin burly.
Climbing:
Compared to my MotoLite I find the Endorphin sluggish on fireroad climbs. But, technical climbs, which are my favorite part of mtn biking, are hands-down easier on the Knolly.
Climbing:
Compared to my MotoLite I find the Endorphin sluggish on fireroad climbs. But, technical climbs, which are my favorite part of mtn biking, are hands-down easier on the Knolly.