Every PlayStation except Vita. PlayStation is pretty cool, as is PlayStation Portable. Vita isn't cool because it doesn't match numbering/simplicity, and it ended up being super ironic because Sony was pretty determined to kill Vita relatively quickly.
Sega Saturn. A planet sounds really cool. Sega Dreamcast because it sounds otherworldly as well.
Switch is the best name Nintendo has had to date. Every console has some sort of switch on it but it's a brilliant name for a hybrid. Switch 2? Brilliant. If it isn't broke, don't fix it.
Atari VCS/2600 are both awesome names. Pretty simple letters/numbers but catchy and exciting for the early days of consoles.
Xbox 360 is possibly the only cool Xbox name to date because I'm not that fond of Xbox as a name but 360 seems to imply a full circle of entertainment.
Lifetime Sales Predictions
Switch: 161 million (was 73 million, then 96 million, then 113 million, then 125 million, then 144 million, then 151 million, then 156 million)
PS5: 115 million (was 105 million) Xbox Series S/X: 40 million (was 60 million, then 67 million, then 57 million. then 48 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima