Let me give you two examples of staying with what you have.
As a member of the local club I enter many comps, and did over 12 years ago, back then I was using (12 years ago) Jask Paintshop Pro SEVEN (7), Jask were bought out by Corel and now they have Paint shop "Photo" Pro 14.
I still use 7. and the other week I was talking with another member who also uses 7.
I also have Elements 10 and Corel PPPX3, guess what I use every single day, yes..... PSP7
If it aint broke ..........