I need a new power supply that I can hook a couple of chargers up to. I don't want to spent big $$$, after all its just a power supply. I am considering the Radio Shack 25a that I have seen for about $60, but it looks like a beast.

Thoughts?

If 25 amps is enough it should do a nice job. I generally size the ps to slightly above my maximum power requirement. Many people size the ps 2-10 times larger than neccessary which allows them to grow into it.

I run a 25a Radio Shack PS and power a pr of 0610iNet Hyperion chargers and have not had any probs chanring pairs of 3S 5000 lipos. I use it to run a single 0610i charger to charge a123 5S1P pacs at 10amps.

I have a ProPeak 20a PS which has also proven to be reliable. The Pyramid supplies have a good rep as well. These are all in the price range you're looking at. If you need more amps, Pyramid makes a 30a and PowerForce has a 40a supply.

one general rule of electricity is to use 80% capacity. for example, if you need 16 amps to charge with, it would be best to buy a 20 amp supply.