Perfect bike for vet rider

I had elbow surgery 6 months ago and I've been waiting impatiently to see if I'll be able to ride again. I rode for the second time this weekend and the diagnosis is looking positive. I decided that since I can still ride, I deserve a new bike. I'll ride the bike on moto and supercross tracks. I don't race much - I just ride for fun. I'm more concerned with taking the jumps than going really fast.

I keep my bikes for 3 or 4 years so it's a big decision for me. I currently ride an Eric Gorr KX310. I really like the power delivery of that bike but it's a bit of a bus. I'm looking for something that turns better and I'm also thinking that a lighter and less powerful bike may be better for my elbow. I'm not sure how much power I could give up and still be happy.

The suspension on my bike is a jack-hammer. It wears me (and my elbow) out when I try to go fast in rough terain. I rode a YZ450F with a revalve from Pro-action and I was amazed at how plush the suspension was. Don't know if that was from the revalve or if the four-stroke suspension comes that good stock ?

The bikes I'm currently considering:

2003 RM250: From what I've read, this is a great handling bike with strong power. Not sure if it would be any easier on my elbow.

2003 RM125 or YZ125 bored and stroked to 167cc by RPMs: Probably my lightest choice. Not sure how I'd like the powerband of this bike.

2003 YZ250F bored and stroked to 302cc by RPMs: No lighter than a 250 2-stroke. How does this bike turn compared to the RM125 or my KX250? How's the suspension?

Thanks in advance for your insight! Mark

If it wasn't for the bad elbow, I would get a CRF450. But I'm afraid that extra weight and power will work against me sometimes and wear the elbow out faster. That's why I've been thinking about a 125cc-size bike - and wishing I could stuff my 310 motor into one.

I'm going to have to bum a ride on a 125 and 250F and maybe things will become clearer.

Thanks for the replies.