I got one from hobbyking that has done me grand. 4 chargers in one although they do two charger and single charger units. Quite honestly I can't bring myself to go back on their website as it's a horrendous mess but the charger has a black body with an orange / yellow trim.

With regards to PSU, the simple answer is, one that will supply enough current. You can find many bench top power supplies that will do the job but if you are electrically minded you can convert a PC power supply for the job (it's not usually all that hard).