There were plenty systems within the 1990s that were hot, but lets discuss the best systems in this era.
Among the top were snes, sega genesis, psx, ps2, n64, dreamcast,
My personal favorite was the SNES as this was the system of the golden age. Super Mario world came with the snes set with 1 controller at 1 time. When I was young, me and my brother had the option of our parents getting us a Sega Genesis or the SNES system. We already had grew up with the NES, so the only right thing was to go with the SNES as an upgrade.

We got the SNES and rented the hell out of our local video store. We rented a game every other day as, the renting price / time was only $2 per day.
I have so much memories of the SNES times from Mario Kart to Chrono Trigger. Sega Genesis was pretty close to SNES in terms of speed and great arcade games but because of SNES features from the sound chip to mode 7, to the beautiful graphics and resolution it offered, the sega genesis came in 2nd place.