depends on your needs. if quiet is your main goal then antec wont do, you want to be looking at zalman cases
if cooling is your main goal then antec and coolermaster have a good track record.
if style is your thing then it becomes a very personal choice...
for me i like the haf-x series and the antec 902 they are well stocked with reliable fans that have good cfm although they can be a little on the noisy side when there going full tilt.