People worried about ASICs shouldn't really be, because I have heard that the GDDR6 Vram cards are coming out in middle/late 2014 and they will cost about the same as GDDR5 VRAM cards, and I have heard that 1 card should be able to mine at a max of about 2.5M/hash (for ~$800 (7990 price))
I agree, who knows what AMD pull off next time. They might decide to make move on miner market and make ASICs. You should mine with what you got make some steady profit, without worrying too much right now.