Lately I've been getting into the
HOFA plugs and getting great results. They're about to release a new limiter, which may be worth waiting for given the quality of their other stuff.
Another good choice, particularly for rock and other punchy styles, is the
AOM Invisible Limiter. Both this and the HOFA are designed to be very easy to use, which is a plus in my book.
Cheers,
Eddie