I've been a bit underwhelmed with the Fox shock supplied with my Covert (boost adjust Kashima), and to top it all its looking like I'll be sending it back a second time under warranty for the cavitation issue, so now have doubts over the robustness of the thing. I'm considering getting a Rockshox Monarch shock to test out and then flog whichever one i least like. I was looking at the Monarch RT3 (seems similar to the Fox unit in terms of features), but then spied the RC3 which has the addition of the smaller air can. I'm not sure what this smaller additional air can does and if it is something that will benefit me. I'm running a Transition Covert 29 with 140mm travel and use the bike for typical trail stuff and jumps and drops you find on downhill trails in woods and at trail centres, so upto 3 feet in height, with ambitions for trips to the Alps.
I really want a fit and forget style shock which is why I thine the three way switches for climb, trail and descend duties.