The FS300 is 3" deep, 6" wide, and 1.5" tall at the back… any smaller and it'd be difficult to hit only one switch. Don't know the dimensions of the FS3X…
fkalich… sorry, I didn't check prices yesterday, I'm sure you're right. They were the same price when I bought mine, but that's been some time ago. It seems now that the FS3X is $4 less. I'd guessed they'd work the same, but wasn't sure, so that's good information to have. Looks like they're about (exactly) the same size, too.
