I've been spinning up a couple of the first batts I made with my drum carder. The first is a blend of Finn and Angora rabbit (that's the lighter bobbin), the second is Finn & mohair locks (I used dark red & burgundy locks).
Each batt was 1 ounce, and I'm planning to ply them together and see what happens. The batts are so airy and lofty, it makes for quick and easy spinning. I see many more batts in my future!