Yep exact same thing here. Although RMXP has a Scripts option where you can input scripts randomly found on the web, big characters, slightly better graphics, and a slightly better resource system, RM2k3 has the unrivaled sideview battlesystem, wich nullifies all of RMXP's advantages.
Unless you can find a way to make a CBS, I wouldn't use RMXP, because the battle system is really, really crappy.