I'll cosign the KSL G6! For a sale purchase, I don't think you'll be disappointed with them. I say TTS: whatever your normal size for cupsoles tends to be.
Skated 2 pairs and both lasted me 2 months minimum of skating. Wore them for longer since I rotated with other shoes. Had the black/green and the white/gum. Gum was grippier sole than non-gum one but both are competitively grippy against NB soles.
The fit is classic-ish meets modern. Not super tapered, but not boxy: a nice in between. Doesnt squeeze your rear/midfoot like some NB do for me. There is some arch support in the stock insole, but it's not much.
The G6 midsole does its job and makes your foot feel cushioned while still offering more than adequate board feel regardless of insole choice. Does take some time to break in the sole but if you skated the Spanky G6, it will feel similar, just more shoe protecting your foot in the upper. Flick is fantastic. I thoroughly enjoyed kick flip tricks with mine.
Some panels might rip fast (eyelets) but it doesn't make the shoe bag out, surprisingly. Super glue can make these go a long way if you're worried.
2-3 months of skating:
Sole started to feel super thin but everything else was still solid on the upper, even if it looks ripped
@Made In China what are the NB cups you skated, for reference?