While I was able to find the right person, previously, to do a trade, I do agree with this info. As I mentioned, I was contacted by 4 or 5 other DVC owners about my trade request, and those went very much like what heathpack describes. I was told by 2 of them that MVC resorts are not even close to the quality of the DVC resorts. Others were comparing my MF, which they found on TUG, to their rental potential when they determined how many nights they'd be willing to book for my week in Aruba. But, in the end, I found a very nice woman that wanted to trade 7 nights for 7 nights, and it was great.
I will say, comparing Aruba Surf Club to Old Key West, I felt Surf Club was superior in the villa itself, the onsite amenities (pool options, beach, etc). Where Old Key West beats MVC resorts is just in the convenience of a Disney vacation. I'm sure some of the newer DVC locations may be nicer, since OKW is the oldest, I believe.