|Can't comment on the organic cotton, but with the bleached vs. unbleached, I have both (got a bunch of washed-once bleached for super cheap, bought unbleached myself), and I really can't tell the difference after several years of use. The difference goes away sooner than that, I think, as the unbleached lighten and the bleached are no longer pure white.
The only downside I can see to the unbleached is that they may need a few more initial washes to reach maximum absorbancy, and that's no big deal. Personally, if you go with standard OS, I would go with the unbleached.
And the AFs are truly awesome covers. Kids don't undo them, they cover the diaper easily, and you just know--snap, snap, snap, snap--the right setting instead of having to fiddle with it.