(You should, you wont regret it!)
I'm using an R4 for my Platina game since I'm a Pearl player, I have a bought copy in Japanese. It's an english version, I cannot recall whether it's US or EUR but I managed to kick the corrupted file error's ass. However, I'm still having trouble with my sav file remembering my saves.. if I do it the save as way and create a whole new file it sometimes decides to go with my new changes but mostly it doesnt and a lot of the times I get questionmarks in all of the fields.. it's frustrating..