How about one of the small Nikon DSLR bodies? They're much smaller and lighter than the big rigs. I frequently use my little D40X for just everyday stuff, and it's no chore at all to bring it out and take some photos. And the image quality is certainly good enough - it's basically the same as the D200. The newer small bodies have equivalent IQ with the newer big bodies. And you can use your existing lenses. Try a D3100 or D5100 and see what you think. I think you might like one.