Multiple Consoles, What A/V Switch?

For those with multiple consoles (NES, SNES, Genesis, PS1, PS2, etc...), what A/V Switch do you use? I'm looking at the 8 in, 1 out RCA switch. But, I will need more than 8. Is there a 10 or 12 switch or there? Or what do you have?I will have DVD/VCR, Roku, NES, SNES, PS1, PS2, X-Box, Genesis, Wii, and 1 or 2 more I cannot think of right now.

in theory it should be possible to daisychain them by plugging the output of one into one of the inputs of the other.