RF 100-500 vs the Tamzooka.

The RF produces a better image at 500 and cropped to effective 600 that the tamzooka. Focusing is faster as well

RF 24-105 vs EF 24-105. Soooooo close, Really can't tell a difference in thiddle 2/3rds of the frame.

Going to keep the 100-500 going to send back the 24-105.

My 2 cents.