The only commonality between the xgk and the reactor is the high price. The stoves are intended for different purposes in my opinion. If you are at 15,000 feet the xgk would be nice to have - but other than that it would be noisy, heavy stove. The reactor is a fancy canister stove that might have enough fuel efficiency to offset its own weight, maybe. I think there are better options as far as stoves go - but I am a cheapskate and my suggestions would most likely be laughed at.