Sega retro console suggestions

All right guys! I want to buy a Sega System tomorrow and I want to poll the retro community for which one. Genesis Genesis w/Sega cd Saturn Dreamcast When I was growing up I did have a Sega Genesis by itself and also had a Dreamcast. Unfortunately my Dreamcast didn't last long because the laser died. I liked the genesis and Dreamcast and know I will still like them but the Saturn is interesting since I never had one. Which should I buy first and is there any essential game recommendations.