I remember when alloy jockey wheels where popular last time around. They didn’t grip the market at the time because they lacked float.
Is that still the case?
Only from a marketing perspective. Float is snake oil in my opinion. Never seen any benefit from floating jockeys and only seen the down side in expensive original brand plastic jockeys that wear fast, clog up with mud and bearings seize easily.
CNC’d jockeys for me, especially vented ones (sheds mud). Shifting performance identical as far as I can tell.
That said I go for ceramic bearings in them. A little more pricey but outlast the jockey itself.
Just don’t go for crap ones. I’ve used KCNC (pricey) or Uberbike (half the price), and both pretty good.