Great review Kyohack!
I recently bought a XploderDS, and for far it's rather lacklustre. Takes about 5-10 mins to transfer save files either way, and then I have to go convert the .gds file to a .sav before I can use it with PokeSav
So a couple of questions (and apologies if you've covered these and I missed them >.< )
1. What file format does the R4i save as?
2. Where's the best place to buy it? (can't find any on ebay)