Little flashlight philosophy question here. Over the long run, would it make more sense to have an old P60-based Surefire you could keep swapping LED modules into, or a new integrated model and just sell/replace when you want a brighter one? I see the advantages of the old one as customizability vs. more features (like multi-stage tailcap) for the newer one.
Reason I ask is that I have a Z2L (80 lumen LED) and a P2X and really can only afford to keep one. Z2 would need a new drop-in to compete with the P2X of course.