I pulled the trigger on the download all. Didn't choose music yet, because I didn't know how much space that would take up. It's been downloading for a while now, which is ok.
My friend setup LB and RocketLauncher on this usb drive for me for all my many platforms. I'm guessing he chose not to let it download for MAME since it would take up a lot of his time. I don't know.
I'm sure liking LB over hyperspin for my personal game computer, although HS is nice for a cabinet (but i think bigbox probably is too, but i haven't built a cabinet yet. can't wait to do it later with LB Bigbox now that I see it has a similar wheel to HS). LB is nice and clean and easy to navigate. I like that on my desktop.
I am hoping LB gets a little bit faster when loaded up with 24k+ games, like I have.
I will try adding my regular PC Steam games next, which is just awesome.