Here's what I've been using as my ULTIMATE set ups.
Sharp Twin turbo model with a converter to play US games
Japanese Master System with a converter - yeah get my FM ON
PC-E Duo R with region mod and purple LED, RGB modded with new laser
White Japanese Saturn with region mod and mod chip, I want the video expansion cart soon
SNES with tabs broken to play SFC games and purple LEDs to light up the cart slot lol
PCE GT with region mod and all caps replaced
Genesis with cart slot cut to play MD games with model 1 cd, I'd like to unibios the cd rom but can't find the chips anymore
also need to region mod switch the genesis
CD-i 450 with video cart
PS1 with stealth mod chip