My parents use a "pros / cons" worksheet when making a large decision. I expanded it similarly to the priority matrix; there are four quadrants: pros of doing; pros of not doing; cons of doing; and cons of not doing.

Later when I worked in technology we used variants of the priority matrix. It's easiest to use with a 2x2 matrix like the one you demonstrated. I really like that as well, I hadn't seen it with such simple wording -- "do first, do next, do later, don't do". Thanks for sharing!