I once had a near airprox,it probably was but I was more annoyed than anything else afterwards!
In the cruise at prob 2500 ish on an FIS I was notified of similar level traffic out to my left,the vis was not fantastic at the time so when I finally spotted him we were too close for comfort.
I had right of way but rather than prove a point I took fairly sharp avoiding action,enough to make my pax(a ppl) jump!
I think the sight of the underside of my a/c woke the other guy up who promptly shouted "AIRPROX!" down the radio
He then said "I think we will leave it at that"
I felt we both learnt something-me fly at a less common height choice, him-well he probably remembered the rules of the air regarding converging a/c.
No airprox was filed,he pointed this out in the air,and to be honest I didn't want the hassle.
I think a CHIRP report would have been worthwile though.
