Fluid Flirt L is the way to go in terms of comfort, iv'e had mine for nearly a year now, im 6ft 5 with 37 inseam and 190 pounds. I have plenty of leg room with the seat in the middle. I dont really like the RAD, I squashed myself into the 185 for a while - it was rather slow, not very comfy and the tail has very little volume. Last year a mate of mine ran a small waterfall in the RAD and got back looped into the hole a the bottom and nearly drowned (im not saying the boat will kill you) but the low volume tail makes this boat very single purposed (only good for hole play). The Large Flirt has more evenly distributed volume so it can get you to the holes and waves in one piece. If you can try one out it is definitely worth considering!