I forgot to mention that I also have an Imax B6 copy version, but it seems that my cars go faster when charged on that charger. I'm a little hesitant to use the Imax though as I'm not sure if it will harm my batteries being a copy version.

There's a couple of chargers that also can test motors & servo's which I am interested in, and one which has a colour touch screen, but that just seems as added "bling" over the basic lcd screen version. Is having the testing ability something that's worth the higher price too or is it just a gimmick to promote sales?

Cheers
Rob.