I'm not sure I can answer your question. But, I'll give you my experience. I've been cycling for over 40 yrs. Probably 90% road and 10% cyclo-cross. I started with cages and have tried several clipless systems. About 25 yrs ago I discovered Speedplay Zero. I've never gone back. I also use Speedplay Frogs on the rail-trail. They have been discontinued but I have several sets squirreled away. We are recreational riders so a 25 gram weight difference or a 5 watt savings are meaningless. I think you have to try different systems, if you can, and see what works for you.