Look around Tower for just one good retailer who stocks a big range of chargers.
For example: This one for about $110 and works off AC and DC and does LiPos and NiCds and NiMHs and PB. and cycles NiCds and balances LiPos and reports every task it does etc etc etc
http://www3.towerhobbies.com/cgi-bin...&I=LXVRS6&P=ML
Look at the Venoms there too. There are a number of good brands that do magic stuff.