The E-Flight ARF suggested by -EXTRA- is a very nice plane, but it's quite a bit more complex and expensive than the Air Hog that you're currently flying. My advice would be to check out the Hobbico Flyzone Mini Ventura:

http://www2.towerhobbies.com/cgi-bin...&I=LXJRB4&P=ML

It's a complete, ready-to-fly airplane like your Air Hog. It comes with radio and battery charger, and the nice part is the battery pack included with the plane is removable. You can buy extra batteries for $15~$17 each and charge one in your car while you fly with the other one. A Mini Ventura with two batteries can be flown all day until you get sick of flying.

There is a link to a video of the Mini Ventura in flight if you look at the above web page carefully.

Good luck and happy shopping!