Just to echo what psgarcha92 was saying, relax on the upgrades for now and take some time to appreciate the phones. I've had my Zeros for a few months now and with a bit of EQing, they're an amazing pair of phones. Do you really believe that the DBA-02s are going to be a massive jump up from these? If you do, I think (I don't know for sure) you'll be disappointed. Judging from what people say about them around here, they're great for the price, but they don't seem to be a significant upgrade over the Zeros. Rather save up and jump a tier or two if you can and appreciate the difference then. To me, the Zeros seem to be the top of the mid tier stack and only if you get SM3, IE8, EQ7/5 or CK10/100s or similar will you see a significant difference. I'm a newbie to all of this, but this is just my 2c on the matter as I had similar feelings when I first got my phones.
Personally, for me, doing the research and reading reviews is sometimes almost as much fun as buying items and using them. I try not to confuse the two activities as it can get expensive very quickly.