So I'm in the market for a wide prime. On DX, my current lineup is the 11-16, 35 1.8, and the 50 1.4D. Tele stuff is not a problem, and so I'm looking for something that'll fill the gap between the 16 and the 35. Oftentimes the 16's too short, and the 35 not wide enough. I've always been playing with the fast midrange zooms; the 17-55, Tamron's 17-50, Sigma's 18-50, Tokina's 16-50, etc. The problems for me, however, is the 17-55 is awkward (big and the damn zoom ring is tiny and so close to the body), the Tamron has loud AF and VR, the Sigma has slow AF, and so far I haven't found a sharp Tokina. So I look to the primes. However, I've always thought that if you can't get a faster-than-2.8 prime, why not get the convenience of a zoom? Marginal sharpness performance is the only benefit I see here.... But I'm looking at the 20, 24, and 28 2.8s from Nikon anyway. The 24 1.4 is out of my price range for now (and when I go FX I'll pickup a 17-35) so I'm not even going to bother with that. But the 2.8s are cheap, look well-built and have the classic AF-D construction. I'd like to hear your success/failure stories with them, as well as which you think I may be happier with. Are there any reliable 3rd-party primes in this range as well?