I own and use the following limiters:
UAD Precision Limiter
Voxengo Elephant 3
PSP Vintage Warmer (limiter built in)
Pro Audio DSP DSM-V2
I have demoed:
Waves L2 & 3
Fab Filter Pro-L
Ozone 5 Limter
For the music I work on (being mainly dance, pop, etc), the DSM-V2 and Sonnox are the absolute best. They sound incredibly clean and clear, and don't suffer from the high frequency coloration that some of the other limiter plugins seem to impart.
For me the Pro L seemed to leave a hole in the middle, like some kind of emptiness. When I bypassed it, it felt right again. I had the same impression with Ozone 5, it adds some high frequency enhancement that I don't like.
With the DSM and Sonnox, I never feel like a limiter is in use. I also like using Elephant and Xenon on more softer delicate music, sometimes just on the individual bus groups.