I've got the dual-format steelbook on order, but I'm not concerned with extras.
Although it didn't come into the equation at the time, a positive is that it has the original intertitles. It seems silly, but I've been burnt by English intertitles before (font is too modern or image too stable and it comes across anachronistic). Funny that language becomes a deciding factor for me on a silent film. If I were the sort to listen to commentaries, I think the MoC is the version to go for. It includes two versions of the commentary (German with subtitles and English dubbed).
From a personal standpoint (and not relating to this particular release), I understand that Eureka! are a very small outfit with an intense love for what they do, and in-principle I like to support them. Kino do some excellent work too (I have their
Dr. Jekyll & Mr Hyde 1920 DVD, and will upgrade my public domain versions of any other movies I like to stuff they've released).
I hope that helps.
Edit - Kino are stating on their
Facebook page that the region-free status was a mistake, and many people are calling BS on that. They pushed Eureka! to region-lock, then went region-free themselves (although they're claiming they'll region-lock all future pressings). It makes me even more inclined to encourage you to buy the Eureka! release.