Tough call.
Radical seems like the better deal (although I'm not sure how much the shipping will cost you).
The edge to having Mousin' Around in the home is that there are a lot of them on location that are just beat to piss and don't have flippers strong enough to do anything. I always think it's nice having a game in a collection that people are peripherally aware of, but having one that is in extraordinarily nice shape and well taken care of.
Only ever played Radical at a collectors house, once. Fun but didn't leave a huge impression on me.

For those early Sys11s, obviously the dealbreaker is what music do you like better?

I know which one I'd pick

Sounds like the right choice! Enjoy your game!