The only bike would be the YZ250F, which would be the best anyway. Most reliable, only 250F from 01-03 so your only choice. This bike will have a good amount of low end and will rev out pretty good from what I have heard. Good choice, by the way. These bikes are really easy to begin on. Try to get a deal on an older model at a dealership. If you try hard enough, you might be able to get an 04 or an 05 from them because the 06's should be out or be out soon. I have heard from other people that all the 250F's besides the YZ-F are money pitts. They are a lot less reliable and dont perform as good, that's what I hear. Since you are getting a 250F (if you get 03 your only choice will be YZ-F, but if you could get a newer for about that price) get the YZ250F unless you have a whole bunch of money to back you up for repairs. You should actually have money to back you up with all 250F's. If you do get used try to get one that has hardly been ridden or has been completely renewed.