I don't really plan on dealing with UHD Blu-ray discs. The BDs I do have and plan on buying in the future are not UHD. 17 can play from BD ISOs, so that part is already covered. Any reason(s) to upgrade from 17 to 20 that would make spending US$70 worth the investment? I have Power2Go 11, and I really don't see any need to go to 13. I didn't even know I owned it, have never used it.