Best bang for the buck chargers currently are the Turnigy Reaktor chargers from Hobby King. Airplane guys says these are rebadged Junsi chargers.

Single channel: http://www.hobbyking.com/hobbyking/s...e_Charger.html

Dual channel: http://www.hobbyking.com/hobbyking/s...e_charger.html

You should really drop your requirement of the charger having a built in power supply. AC/DC chargers always come at a big premium with sub-par feature sets. Pick up a 12v server PSU on ebay for $20 shipped.