What would you suggest for migrating from Cannon Powershot HS280 to DSLR?
I see by your profile that you do some bird photography. Having said that, moving from a the SX280 to a DSLR is a big step. A big factor will be how much do you want to spend?
Note my reply above about a T6 refurbished. You could do something similar, not necessarily the T6, more along the lines of a 70D or 80D with the 18-135mm STM lens. Then if you like using a DSLR, you can move to a lens more devoted to birding.