I bought a docking station for my ipod 3G, a Zenex ZN-DS5007. Everything works EXCEPT charging. It does not support the ipod 3G for charging. Since then, as I search for a replacement, I'm finding that few support the 3G. Can anyone advise me on a good quality docking-charging unit that supports charging the ipod 3G? I want good sound, don't care about radio or clock. I would prefer one that will run on batteries and AC. How much will I need to spend to get a good one? Thanks in advance.