A friend of mine (went by Clyde here on VX.info) had his towed one time (not by his choice I might add, but because of a mistake by the towing company), and from what he said it was never the same. Something happened to the trans, the towing company denied responsibility, etc, etc. It was a mess, so much so that he decided to just trade it in on something else.

And apparently the towing company paid no attention to the 4WD badge on the back because I know it was still present.

So yes, I'd also recommend flat-bed if you have any choice in the matter whatsoever.