go for the Antec it's the case I am going for, why? I have read a few posts saying the A380 can suffer from dead spots because of more air flowing in than out.
The A380 did also suffer from the front fan creating noise due to it hitting the case.. I think this has been resolved.
By all accounts the Antec is a great case and quiet (not read any bad reviews). In all honesty both cases are probably very good but as I am spending my own money on a case I am going for the Antec.