Although I haven't ridden one I think a Nypex would be the ultimate sled. I've owned both the Nytro and a pretty horny Rx1 and much as I like my MCX Nytro I 'm not in love with the 3 cylinder. For a guy my size 180lb the Nytro is a better fit and less tiring to ride but that 4 cylinder gets under your skin and you can't get it out.
M5
M5