I second the Herter's brass from Higginson. Lovely stuff.
I do, however, have nothing but positive dealings with Jerry at Mystic so choose your coastline and buy with confidence.
I just bought Privi Partizan factory ammo and reused the brass after I shot it up. Given that the cost of empty brass is almost a buck each, I found it worthwhile.
Had I known about the Herter's brass, I would have bought it.