the contrast in 3.5 one is more accurate and it's quite more legible and looks much better, i give it a 7/10 5.5 looks better then the others but it's still a bit overcharged, 3.5 looks cleaner.
Bars at top n bottom of 5.5 fits vrey good 6/10
1-1.5 are too "dark" even they look OK
2-2.5 have that light line that makes em too messy
4-4.5 From my point of view colors don't suit in no way,and it's difficult to see ur name in it