Loved?
TurboGrafx - 16 or PC Engine is it more commonly known.
First system with CD-Rom technology!!
TurboGrafx is like the Amiga of the video game world. It really was an amazing piece of hardware. Well, thought out for it time with lots of expansions, yet is mostly forgotten by everybody.
TurboGrafx has some really amazing games (especially graphics wise on CD) and it has some real crap games. But it was like the Amiga in that way too, as it seemed anybody that wanted to make games for it could and did.
Others I loved,
2nd would probably be SNES
NES of course will always have a place in my heart.
N64
Wii
CD32 (I miss you!)
I never owned a Dreamcast but I wish I had. The graphics are amazing for it's time.