I used a Mach 3 for several years while I was in the Navy (They hand them out in boot camp). I think they shave great and close. I think the problem for me though was the whole lift and cut thing...I think that they lift the hair out too much for my skin and the result was horrible painful razor bumps. For me a single blade passing over my skin is a better option. I get pretty close shaves with a D/E and as my technique improves they're getting closer and more comfortable and my razor bumps are almost totally gone. For many an M3 is perfectly fine...Expensive but fine...For you, you seem happy with the M3 experience and using a D/E on the weekends. What's wrong with that? Maybe you can't get the closest shave with a D/E. My shaves are not as close as when using an M3. Still, they're more comfortable now that the whisker can get back out and not curl up inside my skin...Somebody already said it, the point is to enjoy it or at least have it be comfortable. Using a D/E is still way cooler though...Have fun!!!