I'm thinking of buying an 09 YZ450 for hare scrambles and enduros. I'm currently riding an 08 KTM 250 SX set up for off-road with a Rekluse PRO. I've done multiple searches on mods and opinions on the 09. My specific question that I can't find in a search is what Rekluse should I buy, the Core EXP or the PRO. My riding is all off-road (the only time I ride a track is for practice) and I've had a Rekluse on all my bikes for the last 7 years. My #1 concern is preventing the bike from stalling. I'm looking for recommendations on which Rekluse to run. The EXP looks great but I wouldn't mind saving the money on the PRO. So what Rekluse should I buy?