I've used an original R4, then a "R4-Clone" named N5.
After that I got an M3i Zero (but the card bus has a failure on electronic, with a tedious "paper trick" to do every time... )

Now I've got ad AceKard2i card (loading system AK-AIO 1.6 RC2) and I'm pretty happy
For more info follow the links in my signature.