It's kind of a strange question. If I'm playing over a minor 7th chord then I'd probably play dorian stuff, if it was a 7th chord then I'd use mixolydian or the altered scale...obviously I wouldn't play a lydian mode over a minor chord. Modes are only relative to what you're playing over!
If I'm just playing something over a minor tonality then I'd probably use phrygian but tend to mix it up with dorian or aeolian.
If I'm just playing something over a minor tonality then I'd probably use phrygian but tend to mix it up with dorian or aeolian.