What is the best for GBA backuping

[Muskusrat]

Originally posted by AXmichigan
i heard xg has occasionally messed up
i suggest extreme

I read the same thing but also about the extreme, which isn''t even possible to play the new pokemon games with. Is there any good review site about gameboy advance backup units? I have been searching for a couple of hours now but I can't find a real good site which reviews all availeble backup units and compairs them with each other.