Do you work for free?CCC only offering a free trial versus SuperDuper letting you do full clones for free makes a big difference for me. I like using free software where possible. If SuperDuper changes their licensing model with a Big Sur update then I may reconsider.
If a program works to make sure your important files are backed up like they should be, that is worth a price to me and it should be to you as well.
Is $40 for a license that much money, compared to how much you spend on Apple products?