What system has your favourite graphical aesthetic, and why

[Leynos]

SEGA Dreamcast for 3D. A lot of sentimental reasons and stuff like Shenmue not just visuals but abilities in that game and other games on DC blew me away. PLus the colorful crisp look of everything. 

2D is any 16-bit console and Saturn. 16-Bit games still look good and 2D on Saturn is better than any console of its era. The Capcom fighting games esp or Princess Crown. Astal and others.