Good idea for a thread.
My top consoles would have to be.
1. Sega Dreamcast
2. Microsoft XBox360
3. Microsoft XBox
4. Sony Playstation
5. SEGA Genesis
6. Nintendo NES
XBox360
My 360 red-ringed on me and there's still a lot of titles for it I have yet to play but what I did play was phenomenal. Sonic Generations is one of the best Sonic games since the Genesis era. The Batman: Arkham series rivals Christopher Nolan's Batman films. Mirror's Edge is a stylish first-person adventure & The avatar/achievements system is cool.
SEGA Dreamcast
I got SEGA Dreamcast for Christmas 99 and it blew my mind. 128-bit graphics (For its time it looked incredible) the first 3D Sonic game, and a bunch of other AAA titles. It seemed like every game I rented for that system was great. I can't remember playing a bad Dreamcast game. The Web Browser was my first access to the internet. And downloading VMU saves was awesome. Crazy Taxi was super-addictive, and Shenmue was one of the most ambitious and creative games I ever played. I liked wasting time at the arcade playing that QTE game or buying things at the grocery store hoping to get the elusive Super Sonic figurine. Soul Calibur, Hydro Thunder & Super Magnetic Neo were also some of my favorites.
Microsoft XBox
It stung to lose the Dreamcast so quickly, but the XBox was a worthy successor. The controller was very similar to the Dreamcast's. (A lot of people complained about how big and bulky it was, but I loved it. Don't care for the Controller-S) A lot of SEGA exclusives helped make the XBox feel like a Dreamcast 2. Shenmue II was far bigger and more epic than the original, JSRF was bigger and had better graphics and music, and Crazy Taxi 3 was just as addictive as the original. Soul Calibur II was even better than the original, and I was introduced to the Metal Gear franchise through MGS2 Substance. Breakdown was a ton of fun. Though Sonic Heroes was a bit of a letdown, it was still a decent game. Didn't really get into the whole Halo craze, though.
SEGA Genesis
Sonic is what drew me to this console. I already had a NES and loved it, but the graphics and speed in Sonic 1 were pretty darn impressive for its time. I liked Sonic as a character. He just oozed coolness. And the premise of saving the world from a robotic dictatorship was so much more appealing to me than saving a princess. Music kicked ass too. The Genesis lacked a lot of the exclusives critics go nuts for like Chrono Trigger and Final Fantasy, but I personally didn't care for RPGs back then. The overhead perspective found in Zelda and other games like it was annoying to me. I was into platformers and the Genesis had a ton of them. Aladdin, Rocket Knight Adventures, World of Illusion, Tiny Toons: Buster's Hidden Treasure, Mickey Mania, etc.
Nintendo NES
I played it at my Grandma's when I was 4 or 5. I remember playing Karate and Super Mario Bros. I wanted a NES of my own and got one that Christmas. The first 3 Mario games were some of the best ever made. Others I liked were Tiny Toons, Battletoads, Contra, M.C Kids, Kirby's Adventure, TMNT 2, Darkwing Duck. A lot of nostalgia over this one.