I'm running tubulars. Between expense, availability and the fact that I approach repairs as a once a year thing, not as something done every flat, the only feasible way to have exact matching of looks, widths and threads would be to buy enough tires to keep all options open. Not being an oil baron and not wanting to burden my younger siblings with a library's worth of past their prime tubulars when I go, my bikers often aren't running "perfect" matches or even exactly the widths I really want.

I run Vittoria Corsas in the "Gs" (G+, G2.0) for nearly all my working tires, (I carry Rallys as good compact spares to get me home.) Fronts same as rear or perhaps one size larger. Color and stye matching is nice but doesn't always happen. I have more bikes and more rear wheel tire sizes and flavors than front wheels.