NES, Super Famicom, PS One, Gamecube and Wii are among my favorite looking consoles. The GBA SP and the DS Lite are the best looking handhelds aesthetically.
Will you be doing one of these for the worst looking console? Because I'll just put in my vote for the PS5 now. Its ugly design combined with its huge size make it the worst looking console from any game company in the last three decades (my opinion).