My D300 remains the delightful camera it has always been, but not without shortcomings, especially the iso range. I work on the basis that its upper limit for quality is 800, bearing in mind that I often crop and enlarge substantially. A D7100 would be within my budget. There have been numerous reviews and comments on that model, including its iso limitations. However, perhaps as always, there are different opinions about that. Since the model has now been in use for quite a time, I would welcome 'mature' views about its limitations in that regard. I use Lightroom as a matter of course, but don't want to rely on that to try to recover quality. Can I also say that I don't want to go full frame. Advice/help would be appreciated.