I've sold my 1990 kdx200, and Im thinking either a 450exc or a 300exc. I was all 450 but then I've been reading about all the extra maint. required for a 4s. I've ridden Dons bike (the Brick)and was really impressed with the suspension. I know most of you all have had some ride time on each others bikes so that is why Im posting here, Plus you all ride in Michigan were I like to ride the most.F&S Was your old bike a 300 or a 250.What is the maintenance difference with your 400/450.Fred how much better is the ktm suspension from the kdx.I rode my kdx mostly like a 4s when in the woods and would only really get on it on the moto track by me.I've heard some say the 300 is like a 3s with lots of torque down low.Ktmmike don't you have a 300 also I think I read that you tried out Terry's bike. All of your opinions are welcome.