I've got a 2008 kx250f that's my main motocross bike, it's pretty fun and looks great. It has given me a few issues being older. I also have a 1997 yz125 project that's just about done. Through all the trouble I've had with the kx and all my used bikes, I've been wondering if it would be worth it to buy a newer but still used fuel injected 250f. I want a newer bike for the fuel injection, fewer issues from previous owners, one fewer bike to worry about, and a better bike all together. I would get a used 2012 or newer. If I want to go that route and get a newer track bike I would have sell both the kx250f and my yz. With the yz almost rideable, I'll love having two fun bikes at the track so it's hard to give that up, but if it's worth it, I'm willing to sell it.
How do newer kx250f's feel compared to older carb models? Should I try to find a different bike instead of a kawasaki? Is it worth it to switch? What's the best 2012-2014 250f for a decent track rider around 190lbs?