Quoted from Flipfliptilt:Assuming you already own a fair(ish) condition MM, a high end restore will cost about the same as a MMr, correct? So which way do you go?
Given this premise, I would do the restore assuming you want to keep the game for some decent amount of time.
If MM is not a grail game for you, sell it and get an MMR if you want it to look new. But in that case, I'd just play the one you already have.