Currently, aftermarket and reference options of both cards come at roughly the same price. And tbh, I am already a bit tired of the heating problems of my AMD card. The heating is so bad that it renders the great airflow of my case almost useless. Also when people make the "room heater" joke about them, I can testify that it is no lie. Believe it or not, it actually heats up my room very well.
Also, thanks for the comment about my processor, Senni. I already thought it was fine but I needed someone else to confirm. After all, we are at that next turning point of PC upgrades and I want to make sure I can squeeze more out of my system. I am fearing that the upgrade interval might shrink down to 1 year at a time very soon.