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Re wheels and different sizes and shapes:
I think people have developed a sense of what they prefer and what works for them, which can easily be at odds with others, so some people will prefer Classic or rounded wheels on a lot of things, others prefer a sharper edge or lock in feeling, without any specific names of wheel brands or whatever esle, there are a lot out there, some really squared off, but I guess Spitfire shapes do often come to mind, eg Lock Ins, OG Classics, Conical shapes.
There is a guy I skate with who has 52 Classics on an 8.25 board and 60 mm Conical Full wheels on an 8.75 board and he can do the same things on each, just saying it depends more on the hanger width as to what worked better, eg shorter hanger and rounded wheels, wider hanger and big square wheels, so that is something that might be not what people want to hear, but it definitely is something to think about too.
People like Ben de Gros say smaller rounder wheels work best, but again he is on smaller trucks.
Those GX and other dudes riding those big fat whatever shape Conical Full 60 mm wheels seem to have no problem doing anything including grinds as mentioned above, so technique might prevail over specific shapes in that regard, even location having something to do with it as well, eg crusty street spots, compared to nice easy skateparks or your own flat bar or similar.
That's my take on it anyway, so I guess there is not a definitive right or wrong answer with wheels for this one, but my comparatively lazy slow skating feels a lot easier on rounded edge wheels, which is why I get swapped in Conical Full wheels and round the edges off some to make them feel way more comfortable for me, otherwise I would be on Classic (full) or Radial shapes more than anything else.