Getting my 07RM250 ready for the warm weather to come. I'm in Southern Maryland and ride: Budds Creek, compacted sand in Middleford Delaware, packed Clay/sand dirt in Easton, MD; Richmond packed sand and woods when it's really hot. I am more grey and fatter than I feel, I'd say a VET "B" rider. I can chase down a 14-15 year old on a 250F with the best of them ( but only for a lap or 2). I've settled on these two tires for front and rear, read reviews but would like to hear real world experience with the "M" and "S" 5's. I used to run the MS3 on my 03RM250 and then my 07RMZ450, those tires worked great and wore like iron. I am leaning towards the S5. I understand a soft tire is a harder compound and a medium tire is a softer compound. Thanks, Steve.