Well, point is made, now if he still wants to get R4, let him.....If he can read, it's enough to check reviews (yes, some are outdated, but still, he'll get a good insight for few most suggested)..
epicelite, check DSTT, AceKard2, CycloDS, M3 Real & SuperCard (you don't have to go by that order)..all those carts ARE BETTER than R4..