Oh well, almost three years passed since I got my first DSLR, the D3100 and I kinda want to upgrade to something better. Over the years I got a few things, I also had a telephoto which I sold since I didn't really find much use to it and I still have a SB-910, 35mm f/1.8 lens and (obviously) the 18-55mm kit lens. Today, it's battery is failing, I'm not sure if I should go full frame since it's very expensive plus that I need to invest in new lenses... The single reason I am considering this is because the "crop" in crop sensors is really frustrating me, the prime lens selection is just sad and I'm really looking into low f stops. So I don't know if more megapixels a higher ISO or more overall settings of a D7100 would help much.