Which to purchase? EOS R3 vs R6 Mark II vs 1D Mark III

[sddemartin]

I’m planning to purchase either a Canon R3, Canon R6 Mark ii, or possibly a 1st Mark iii. I’m leaning towards the R3 or R6 since I don’t have a lot already invested in EF lens. It will most be used for sports photography (football, baseball, tennis), but I’ll also likely use for family and landscape photos.

[Waddizzle]

Both are great cameras. You probably would want to add a battery grip on the R6. You probably would want the R1 for professional work.