What are people using for mastering compression? Thanks.

which compressors would you prefer for mastering?

Hi guys. I read a while back about you guys using two compressors when mastering. A "colored" comp to add some flavor to the mix and then a Clean compressor to level everything out. Im just curiouse which compressors do you consider right for this type of jobs. Mention some brands and in what category would they fall ?

-Mastering mainly heavy rock music.
-forget about budget

My question is...what are some of the best compressors to use for tracking, mixing, or mastering? Out of these compressors which ones are worth buying? Behringer Tube Composer, ART Vla Pro, Avalon, Aphex, Jomeek, Dbx 160's, Focusrites, etc... If I didn't mention some great compressors...please name some :p .