The 1210i does not have a built in balancer and has 180watts of output power. The 0610iNet is a 250watt charger and has a balancer built in. Both will do lipo, a123s, NiXX and Pb. The 1210i will do 2C lipo charging while teh 0610I is 1C. The 0610iNet has a data port and can connect to your PC and it the firmware is upgradable. My 0610iNet has been upgraded 3 times and gets a little better an safer each time.
As far as a power supply, I use a 345watt Radio Shack ai got a super deal on used - it was like new in teh box, orig owner looks like he never used it. There are PC power supplies you can find for little or nothing and mod into a DC PS if you're inclined or ones like this one -
http://www.hobbypeople.net/gallery/158301.asp
or this one -
http://store.buyreliant.com/servlet/...Pyramid/Detail
Pyramids are cheapest I've seen and have a good rep, they also have a 30amp supply.