The Great Planes Super Sportster 40 kit would be an excellent choice IMO.
http://www2.towerhobbies.com/cgi-bin...?&I=LXJ575&P=0

The Great Planes Ultra Sport 40 kit would also be a fantastic 2nd, 3rd, 4th, 5th.... Plane as well. Both these Planes would serve you well for a long time!