I'm looking for a decent AF 50mm for travel. Primary use would be for portraiture and atmospheric photos. I currently own the Sigma 50mm 1.4 Art, but it's really too big for travel and I'm looking for a small, yet high quality lens. I've owned the Nikon 50mm 1.8 and 1.4 D/G lenses and they never really excited me. The next step up is the Tamron 45mm 1.8, but it's big like the Sigma 50mm Art. I do like the 58mm 1.4 G, but I don't think I can justify that lens at it's price point. I haven't found any recent user feedback with the Sigma 50mm 1.4 EX non-Art lens, so I'm wondering if it's still a decent option. Also I'd welcome any other lens suggestions if I missed anything. Thanks!