Any of the harmony remotes would work ( an old 525 or something), and you could use it after as an all in one.
Failing that I'm sure the ones of ebay would work, I once bought one for my old panasonic BD30 and it worked.
But it may just be cheaper and easier to buy the MR version, if they still sell them (as I remember reading somewhere that Richer Sounds stopped selling the MR versions as the hacks don't work after software updates or something).