Sportsman's Guide has some really nice belts right now.
If you're looking for something to perk up your casual kilt you might want to take a look at these. I ordered both and am very happy with them.

Hungarian Parade Belt:
http://www.sportsmansguide.com/cb/cb.asp?a=119377

Italian Police Belt (VERY COOL!)
http://www.sportsmansguide.com/cb/cb.asp?a=163092