My point was to pick one set of 5 major pieces to cover all your shooting.
Here's my problem. I can't think of a single bag of items that would cover all my shooting. For example, my first inclination is rangefinder. It is next to impossible to shoot anything beyond a medium telephoto nor can you shoot Macro with it.
I think we usually have more than we need, and are spoiled by it. We end up focusing too much on equipment and not enough on the shot. We feel like we need a certain piece of super-expensive gear.
Do you mean "have" as "own" or do you mean "carry" at any point in time?
If you mean carry.. I know exactly what you mean!! You might recall that at one time, owned a significant amount of high end Canon equipment but I too realized that I was being distracted and my back hurt. I sold almost all of it and refused to do that again unless it was for a paycheck. In general, it is my point never to carry more than a small shoulder bag that I would feel comfortable with all the time. not just for shooting.. at the mall, dinner, visit friends/family.. etc.. I don't even carry 5 things in that bag...
Rather than being broad with the term "Top" or "Best" perhaps a better approach would be to give a specific scenario. Like this:
"If you were going on a long (months) backpack excursion through Europe, what 5 photo gears would you bring?"
In my case,
M8
12mm Heliar
35mm Summarit
75mm Summarit
Gitzo Traveler Monopod
All of that (except monopod) would fit in a bag the size of a small purse/satchel. Easy, fits, lightweight, simple... Leaving most of the room for essentials like cloths and shoes.
[EDIT]
Now I think about it, I'd probably consider leaving the M8 at home for the M6. No fuss with batteries/charging/media cards.. etc.. The M6 is completely mechanical so its not useless if the battery dies. Oh and that 12mm looks stunning on a full 35mm frame.