A large number of Qtimers and guarantee of clicks.

[wysota]

If that is the implementation of QTimer, then it shouldn't matter whether I keep one Timer or 1000's of 'em.

Not that much.

I had a timer with timeout of hcf of all timouts, and was juggling each timeout, to "reduce the load" !!

It will reduce a load a bit. And you'll be sure that all functionality will be executed or none of it. With multiple timers (even for the same timeout) some of them might fire more than others.