originals are good. Also, if you buy the DIY ones from cube4you and use paper instead of thicker papers (he uses thick paper), its very good. the one i use is from there. Those are the best for master magic. For regular magic try to get a cheap one off ebay.
If you think the cube4you master magics are any good, you must be very weird. Even if I lay mine down and put my full weight on it, at least one side will always stand up afterwards resulting in 100% guaranteed DNF's. I don't think other papers between the tiles will help. It would also require you to take apart the master magic and restring it
I think the original master magic with the new (thinner) tiles are the best.