I have the Venom Pro charger from Tower. It's available with a DC power supply, and it is incredibly capable. I love it. It does not charge two batteries at once. It comes with every wire you could need, including a balance box and a temperature probe. I think it's about $90 w/o power supply, and $130 with. And just to recap, I really love this charger

I recently got the MRC Superbrain 977. For about a hundred bucks, another charger with DC power supply. This one will charge two completely different batteries at the same time. Only used it once so far but it seems to work well. One of the outputs is a built-in kyosho or tamiya, so it's a good idea to grab an adapter. The other output is banana plugs. I think the one complaint is that you can use a program setting for one battery, but when adding a second battery you need to manually enter the settings. I have yet to find the patience to read a manual and program anything; I just manually enter every battery so I don't notice the issue.

Both available from Tower.

By the way, what don't you like about the charger you got?