What are some good compressors to add long sustain without too much squash? Full disclosure - I've never used a compressor pedal. I'm ready to dive in and have been trying to figure it what sorts of compressors would work best for my needs. 

I don't like the overly-squashed, plucky sound that seems to come with high compression, but I love the prolonged sustain. So are there certain types of compressors, specific pedals, etc that plays to a low level of squash with prolonged sustain?

Any tips or advice definitely appreciated!