I've only had the mk2 for a couple of days and i was wondering if anybody used them?

Or even better can recommend me a set? Are there any out there that have the battery information?

I had a perfect set of aftermarket batteries for the original 5D and was thinking if that would be the same case for the MK2?

There's a few cheap ones on Ebay, but most of them say something along the lines of "does not display battery information", does this mean it's only the canon ones that will show me the battery information properly?

Cheers