Well, I seldom let a "what on silver?" thread go by without tossing in my $0.02. Having two silver Audis (same body style, same paint code), and at least one or two other silver vehicles, makes for some interesting comparisons.
Depends on the silver, especially the degree/type of metallic. The Klasse twins look OK on Mazda silver and almost-OK on Subarus, but I can't stand that look on Audis, too "blah". For wax I like Souveran (yeah, on light colors, not just black and red

) but my all-time fave for silver is 1Z Pro MP topped with UPP. I don't apply the 1Z until I already have all the marring out.
Glazes (including Meg's "pure polishes"), BF, and SRP all tend to darken silver a little, maybe what some people want (and what *I* sorta like on the XJS), but generally I prefer a lighter look.
Honestly, as with all other colors, it's all in the prep with the LSP being a minor matter of personal preference. You might notice the difference between *very* different looks such as Zaino and Meg's #26, but not unless you *really* know what that paint normally looks like. LSP differences I see on Audi silver I'd *never* notice on the Mazda and sometimes I don't notice things until I have both the Audis side-by-side.
IMO the problem with silver (actually it's both the blessing and the curse) is that really light marring doesn't show up that well. Imperfections that you'll *never* see under many lighting conditions will still make it look less-than-swell. I probably spend almost as much time inspecting silver as I do polishing it.