I swapped exclusively to the 28g version about 7 months ago from being a long time White Gold user, they are definitely smoother with less perceived recoil to me, although I must say I never found the WG’s as thumpy as some others. They certainly inspire confidence with their performance.
From memory the velocities are supposedly slightly less than the WG’s but it has made no difference to my lead requirements, I do still keep a couple of slabs of the WG QS’s for the fibre only shoots, and do pick up on the difference when I do.
Luckily, availability has been ok, with Greenfields superb service & always getting them in for me, for only a few ££ more than the WG’s.