Best?
Best is a realitive term, they all are about the same IMHO

I used the cheap Ofna box for years,,, similar to this one http://www3.towerhobbies.com/cgi-bin...?&I=LXBN23&P=0
it was the best for me because it was cheep and it worked for years

I had one of these too, it worked fine also
http://www3.towerhobbies.com/cgi-bin...?&I=LXMPP5&P=0

You'll need a battery and a charger also

good luck