Depends on how much you want to spend. I have an Accucycle, Triton, and an ICE. All do just fine. Don't rely on the wall-wart type charger for the 6 volt battery. Some say it will work, but I have my doubts. It was designed for 4.8 volt cells no matter what some may think.
Of the three that I have, the Accucycle is the easiest, but I feel that the ICE is the most useful, does all sorts of batteries.
http://www3.towerhobbies.com/cgi-bin...&I=LXHDJ1&P=ML
CGr.