Battery chargers?

[Shmoov69]

Mods, not sure where this is supposed to go, so I stuck it in open D. Move if necessary.

Ok, I got Optima battery's in the cars but am wondering if the charger is really worth the cash? I've always been able to trickle charge the battery's with a "normal" charger without any issues, but never a fast or jump charge. Well, my dinosaur charger took a crap and I need to buy another one. There are different brands out there and seem to do the same thing, but I don't know. Are you buying the name or a different product totally? I got a buddy that has this one and likes it: http://www.granitedigital.com/aiodc-2.aspx

But Optima is constantly "helping" us out..... Which I want to support also.
Comments?