A subscription would not be for me .. Better would be to pay & download the updates that pertain to me..much like Norton does, I may not need nor want a Sept. update that has only Blues, or a Rock update in Dec , but may only want a Country update or Jazz update..
I personally only use Country, & to subscribe to a monthly fee would certainly not be feasable for me or some others I know.. I just don't see the difference between a yearly or sub annually purchase that we can decide we want or wait for the next one to come out or signing up for a monthly subscription, & be obligated for a monthly charge & maybe find out that the updates for this year are not the ones I need or want.