Several months ago I was in the same situation you were. I think a lot of this choice depends on what price/condition of each is available in your area. Initially I wasn't happy with the quality/price ratio of any of the MM or AFM that were available to me. I eventually preordered a MMR but would have been happy to buy a MM if I could have found one in great condition for $9K or less. For me the only downside of the MMR relative to a MM is the waiting an uncertain delivery time. Then just recently while still waiting on the MMR I bought an AFM after I found the right deal, but it took me a while to find the right combination of price and condition.