Which FEL-PRO Head Gasket would you recommend? Blue or SD?

The FelPro 100xs I have found, in my experience are reuseable.... I have a set on my 367 that have been in and out and are on their third install, the last time in 2004;probably over 60,000 miles ago. Hyup, the things you learn when you're broke.............
That's one short-cut I thought would come back to bite me,lol. But it just keeps going and going and going. The thin Orange ones were ready to pop after just one summer, on my 11.3 Scr combo