This is an interesting story. As a Samsung dual format user, I would definitely give Toshiba a look if their BD player also supported multiple disc formats, especially HD DVD. If anyone can do it well, they should be able to.
My two UP5000s are glitchy, but they work. Samsung firmware support is negligible, and I have had very poor dealings with their phone reps -- so much so that I won't buy from Samsung again.
I'm keeping my fingers crossed that Toshiba can find a way to continue support for the many HD DVD users around the world.
Prof. Bergman, Moonbase Alpha