Apart from a budget 20mm one that came on a mate’s coiler many years ago, all the 20mm ones I have encountered seem to depend on the quality of the cartridge bearings really. (cup and cone shimano ones are not convertable so you don’t need to consider them if you want 20mm later on) The superstar one seems ok so far, I also have a dmr revolver and an atomlab somethingorother which are both well lovely, within a few grams in weight of the pro2, and still on original bearings.
The reason I would choose hope over something a tenner less would be the choice of colour, spoke holes (28, 32 and 36) and that you can now get converters for maverick forks too (which are a bit ‘marmite’ but mrs j loves hers).