I really got lucky this week. I picked up an AMW M270 in great condition at a pawn shop for $85. I hadn't seen this thread and didn't know about it's ability to play raw Replay mpgs burned as files on a data DVD-R......what a plus!
It seems to be built by the same company as my Aspire home DVD player, the AD-1100, as it has almost the same menu design and options. The 7" screen does a pretty good job in the quality department, too. If your looking for a decent portable to play 5XXX Replay mpgs, and come across a M270, go for it!