I need longer reach. So in the coming year I will either get a longer lens or a crop senor body to go with the glass I have. I am curious what all of you think about the trade-offs for each strategy. A little background. I have a 6D mark II and the 70-200 2.8 L USM II with the 2x teleconverter. I shoot sports inside and out and would like to have longer reach for wildlife photography. My perception is that the crop sensor would be the less expensive option but a longer lens on a full frame is technically better. I am concerned about noise at high ISO on the likes of the 7D m II or the 80D (assuming those are the best Canon crop sensor options). Thoughts?