Unfortunately my experience with Fuji Superia has been too variable (200 however has been the best of the lot) but I have a feeling this is much more to do with where it's bought from and how it is stored (e.g. Jessops' idea of keeping film cool is to store it in a furnace, whilst behind the film processing machine operators grab the film out of the machine with sandpaper mittens and hammers....I don't like Jessops 😀)
On the whole I have had the most success with Kodak Gold, consistent that is, either in 100 or 200, 400 is quite grainy but the colour again has been fine. In fact all of Kodak's Gold line is quite grainy although sometimes in quite a nice way.
Anyway, whilst Kodak Gold 200 is my cheap grab and go colour emulsion, with Ektar being barely £3.50 a roll in 35mm, I'd sooner use that and do.
Vicky