What is a "good enough" score for GRE?

[JigglyPuffy]

Hi everyone. I got a GRE total score of 321 (V:155, Q:166, AWA score hasn't come out yet). I'm applying to Phd in marketing (UT Austin, UW Seattle, U Oregon, ASU, UCSD, Texas A&M, etc. basically target at school ranks within 30-100) and focusing on the consumer behavior. I'm wondering whether this score is good enough to go with or I have to retake the test again? And what kind of score is considered to be good enough or competitive for application? I appreciate your time and any suggestions! 

[p287]

Your score is very competitive, but of course even a perfect GRE score doesn't guarantee admission. It can be a good idea to look up the specific GRE cutoffs or averages for your target programs to see how you compare.