I like tube EQs and compressors in general :) they give some character to the general sound but can be tricky to use , specially if you mix loud as I do , the gain staging is important so not do distort these units too much ( a little distortion i always like :D ) .
I also like to use a LA-2 tube compressor in vocals , by sending the vocals thru that unit it already sounds ''finished'' .. it rounds it off very nicely :)