>>3474169oh fuck well I really would not buy a 80d for all that money since I could get one for $750
I'm a nikon user myself but go for canon since you're already using one, here's what you do:
go to ebay and look for a "canon 5d mark III", find a seller with near 100% reputation and above 2000 sales, I found this
https://www.ebay.com/itm/Canon-EOS-5D-Mark-III-Digital-SLR-Camera-With-Box-Shutter-Count-13590-21290/133033835354 and I've bought a lens from this store in specific before so I know personally that they're good.
after that you get a 50mm lens, I'd recommend the tamron 45mm 1.8 which is fantastic for low light shooting thanks to stabilization.
if this is a little bit tight on your budget you can go for the 6d or d800 with the tamron 45mm 1.8 and if you're extremely reluctant to buying used then don't bother and just get a 80d.
>>3474170it would be noticable in terms of iso and dynamic range but sharpness not really.
but here's a thing to consider though which might lead you into getting a 80d, the cameras I mentioned above(5d3, d800, 6d) are all full-frame cameras and not APS-C so if you use the lenses you have now on any of them it'll look like pic related because the sensor is way larger, it'll work of course and the picture quality will be almost the same as a 80d but it'll make you not utilize the strength of full frame, so new lenses is a must if you are buying into full frame.
