Canon 77D has a real fast DIGIC 7 processor which is capable of shooting great quality images in various lighting conditions. Having the 45 focus points, it makes object tracking quiet easy and keep the subject in focus. At this price, this is one of the best choices but doesn't support 4K videos.
Fast DIGIC 7 processor; 45-point object tracking; image quality
No 4K; but you can shoot in 1080p at 50fps