If your interested, here is a comparison chart on key sensor and performance metrics for the D5300, the D5500, and D5600.
http://www.photonstophotos.net/Chart...kon%20D5600_14
There is a significant difference in price, but clearly, from the chart, the D5300 seems to be the best value for AP seeing as how the metrics are so close, and it leads tge D5600 with a slightly higher QE and superior low light performance.