My Super, a Kimber, is not picky at all about what I feed it. I've used Unique, W231, WST, and AA-7 and all have performed very well. I mainly load 130 FMJ.
I've been using Unique lately, mainly because I had a couple of cans lying around. I load 6.0gr Unique under a 130gr Rainier and get a 1070 fps average. I've been using this load for IDPA ESP and USPSA Lim10 minor.
I haved use aa7 -- aa9 is better
Vit n350 is just a little cleaner
These are in non-hybrid barrels
in the newer SVI IMM -- a tribrid with a Ti comp I can use n350 if I pitch the brass after the first run thru
3n38 runs great but costs quite a bit.
If you don't need to make major N340 is very accurate and very very clean.