3. Nikon d5600 - lacks secondary quick info display on top. Lacks dual pixel autofocus. Lacks secondary command dial.
4. Canon 80d - 20k pricier but same sensor. Same picture quality. differences- 77d has newer processor which means better iso performance (25600 vs 16000 in 80d).
80d is better - 80d has large bettery, weather sealing and 7fps vs 6fps (not a big differnce)
5. Canon 800d - the only option i will prefer beacuse it is 15k less priecier and same package in terms of sensor and processor. Only key differnce- secondary display on top and secondary command dial is absent in 800d
CONCLUSION- 77D is best value for money because it has: 1. best autofocus system in market right now (dual pixel autofocus) that Nikon lacks. 2. It has secondary quick info display on top and secondary command dial in this price range. 3. 45 all cross type focus points. 4. 18-135mm usm lens is allrounder.