Leo Vince and Arrow are both nicer IMO

Though tbh, full systems give you a lot of complication for not much gain, as well as being expensive. A decent quality slipon makes more sense, and just about everyone makes slipons for the SV. I like Remus, personally.
As for forks, you can't get a gold valve kit as they're damper forks. You can get cartridge emulators though, which are a huge upgrade. There's also a Matris cartridge kit at about £300 UK ($550US) or you can go all-out for the Traxxion AK20s, a snip at $1000

Or for the budget-minded, anyone over about 160lb can benefit from replacing the springs and oil with heavier items, the SV's soft sprung.
Or, GSXR front end. Easier than you'd think, cheaper than you'd think, all round xxx than you'd think. That's the route I went for my carbed model, GSXR K2/SRAD crossbreed forks. Works superbly, and I very nearly came out ahead on the deal once I sold the SV bits.