For my personal tastes...
1. SNES
From Contra III to Demon's Crest to R-Type III, just so many awesome titles
2. Wii
For all that it was maligned, I own perhaps more third party games for it that any other Nintendo system; games like Monster Hunter Tri, Silent Hill Shattered Memories, Red Steel 2, de Blob 1 & 2, and Goldeneye 007 gave me many long hours of fun.
3. Switch
It's third party catalog includes some of my top ten games of the past decade, and it looks like this will continue into the 2020s.
4. Wii U/Gamecube
Both have relatively few games of interest to me, but among those few are some really cool ones like RE4, Black Ops II, and Sonic Racing Transformed.
5. N64
Very little of interest to me; this system was all about Nintendo + Rare in my book.
6. NES
Famous though many of its games are, I just find games of this era very hard to enjoy for the most part.