I utilize Aoshima, Fujimi, Mr. Model, Pegasus and die-cast wheels if they have what I want or need.
I order most of them direct from Japan, although you have to pre-order them otherwise they have a way of selling out quick. Aoshima produces so many and then when they are gone, you don't see them for years.
I wish XS Tuning would have come out with a few more wheel sets in bigger diameters. They had the right idea at the wrong time.
Chris