I run 10.9.5 on my late 2013 imac. I am debating upgrading to El Capitan. My concern is what programs will work or not--specifically Photoshop CS5. i don't want to go to the monthly subscription due to cost. i have read mixed reviews on macrumors as to whether CS5 works on el capitan. Does it work w/o problems? I also use Quicken 2007.