Now I was willing to accept this if you wanted something special. Mud tyres or spikes or combination road / gravel tyres or even doing 45° angle corner leans at 80kph down Alpe d’Huez or whatever but surely, SURELY, for just going A to B in an paved enviroment it wouldn’t matter?
Yeah no turns out the premium shit does feel great and rolls better. I can never return.


Are there even more than 2 or 3 tires available for those?
LoL, yes 27" tyres come in 2 or 3 different sizes: with ISO bead seat diameters 584mm, 609mm, 630mm.
650b 4 lyfe
27" and 27.5" are not the same thing. 27" always means 630mm with the exception of some obscure Danish bikes that I’m not aware of.
Kenda stopped making 27-inch tires, so now your options are old stock of the (formerly) $5 tires, or $100 tires from the single brand that still makes them, and most stores don’t have them.