I use 4-40 hardware on all my profiles (40 through 100 size). There's no such thing as "too strong" and the weight penalty is minimal (less than a quarter of a tank of fuel in fact).

It also means that I can carry one set of spares to the field.

I used to run 2-26 hardware until I had a pushrod connector fall in half in my hand on my old Katana P's elevator linkage (after many hours and more than a few "unplanned arrivals"). It seems it had fatigued then cracked and it was only because I *do* preflight my models that I caught it in time. I've never had that experience again since shifting to 4-40.