I think your best breed to go with would be a nice Thoroughbred, if you are going to do show jumping eventing, and cross country. My good friend Laura S. is an extreme show jumper, eventer and cross country rider and that is the only breed she rides. She has been on many different breeds (Arabs, Warmbloods,etc) and she says nothing is like a Thoroughbred when it comes to show jumping, eventing, and cross country.

Warmbloods are also excellent show jumpers, but most well trained jumping Warmbloods cost over $20,000. Example: Dow Jones: Click Here

I personally love Arabians and good ol' Quarter Horses (and Appendix), but I do not ride English any more.

An awesome website to look for horses up for sale, lease or stud is www.equine.com I look around that site at least 5 times a day, I am obsessed with that site! I highly recommend you check it out!!

Good luck with your search!