yeeeeboyeeeI need a decent DSLR for under 500$ with full HD video quality, hit me with your fav cam
You can get a few decent dslrs for 500 and under. The canon SL1, T5 are both good cameras that come in at that price point. Both are solid with an 18MP sensor and will give equally good photo quality when compared to eachother. You can get a refurbished canon T5 two lens kit for just under $300 from canon directly.
The refurbished T5 is my suggestion because you get more for your money and you have money left over for additional lenses or accessories.
As for niikon; nikon has been hrting recently due to an earthquake disrupting their supply chain. Their prices reflect that but there are a few options from nikon that do necessitate consideration. A refurbished nikon d5200 would be a good option and it comes in at just under $400 from adorama.
The downside to this is that you get one less lens for a $100 more than the T5 but you do get improved image quality because of the D5200's 24mp sensor.