The only thing to fear is stability, or too much of it. I have run stretch and sid (testing and unstable currently) and I get a sense that sid is even lighter and more stable in hardware resources. With all the fooling around I do I have yet to see anything break or freeze or do anything unexpected in sid. Stretch is so stable it is boring :) Now Jessie, that is a really unstable system ;b .... even your graphics don't like it.