Tiemco TMC2488 or TMC2488H are favorites of the midge crowd when going small, and I use them a lot for small bugs when I need an extra large gape for larger fish. I also like 1XS nymph hooks when I am looking for a bit more classic look, and for those, the Dai Riki 075 is pretty much my favorite nymph hook these days, and I've also been playing with the Daiichi 1530, but the latter does not go as small as you are looking for. Luck.