I'm looking for a cart for a GBA. After much searching I can only find the Elink, Supercard SD, and the EZ Flash IV this available (unless the EZ flash 3 in 1 works in a GBA, I'm unclear on this, the features seem to indicate so but it looks like it's the wrong size). The EZ Flash IV sounds like the best of the group from what I've read. I'm strictly interested in a cart that has high compatibility, simplicity of use, and no slowdown. Extra features are not a concern. Would the EZ Flash IV be best? Is there any place/one to buy a better cart from? And are any carts with RTC still available? Thanks!