On the DHA/ARA...I may be confusing things, but aren't they they the same as or derived from Omega Oils? Could you get a blend and add it to the formula - oh, wait, I guess that would only be a solution if you could get the formula without DHA/ARA. (A birth club mom supplemented with formula and her ped suggested for cost savings to buy the non-DHA/ARA formula and supplement with a high quality supplement of, I think, Omega Oils.)
Karen - I think you're a great resource on this front. If you haven't read it yet, I highly recommend The Ominvore's Dilemma. I think you'll find it VERY eye opening.