Well I've been kicking around the thought of getting a new YFZ450. I have a stock '99 shee that still runs great, but I really need to do some work to it to make it faster like pipes, porting, etc, etc. Everybody has been telling me how fast the 450's are and how well they handle. I briefly rode one down at the dunes several weeks ago, and I was impressed with the power, I just didn't like the fact there isn't the typical powerband "kick" I get with the shee. As I'm still deciding what to do I was wondering how much more reliable a hi-performance 4-stroke is compared to a 2-stroke. I know alot of people get 4-strokes for their reliability, but it's my contention that the "newer" 4-strokes will have just as much maintainace as a 2-stroke. I'm not very mechanically inclined, but I rebuilt my top-end last spring with help from this forum and help from my friend's. It wasn't that hard. I would think tuning a 4-stroke may be harder? I dunno know. I'd like to get some opinions before deciding what to do.