My next memorable for-sure E-skip will be my first.

What would make a really memorable e-skip moment for me - would be something like sitting within the 130 dBµ contour of high-power FM in SoCal (like KPFK, KVYB, etc) listening on one of my Tecsun DSP radios ... and it gets totally wiped out (such that I can't even detect its carrier via another radio's local oscillator tuned off frequency) by multiple simultaneous airport tower VHF voice communications originating from Australia, central Europe, south central Asia, far South America, etc, and a plane in the middle of the Indian Ocean.
The closest I've come to e-skip, I think (can't confirm that it was as I never confirmed the station) was some weird quirk on one of my radios one afternoon several years ago. I was using a Panasonic RQ-SW10 or SW20 (same internals, one has a gimmick feature the other lacks) tuned around 100 FM (don't remember if it was 100.0, 100.1, 100.2, etc, but I think it was not a dot-odd frequency). I noticed I was getting some kind of food type TV show, making periodic mentions of Tenessee. Interestingly enough, I had to balance the local/DX switch in the in-between setting to receive the signal. I'm not really thinking I should count it as an Es "log", though.
Any suggestions on getting really good E-Skip from urban / suburban southern California, where pretty much every single frequency has a station (or IBOC) on it? Or will I have to settle for my nearly-routine reception of 103.3 KVYB at 212 miles to count as my "exotic FM DX"?
Also I'm curious about something - I'm also seeing tropo mentioned as well as Es in this thread. From what I've heard, tropo goes out to a certain distance, like several hundred miles, whereas E-skip is rare below 600 miles (using crainbebo's 630-mile example as a "benchmark". It seems like there could be a slight overlap, so ... would it ever be possible, if you were in the right place, to get the same station simultaneously by E-skip *AND* tropo? If so, what would the effect be like?
I'm not sure if this is OT, but I notice that when I go up on a high mountaintop north of L.A. or San Bernardino, I can get reliable reception of some AM stations from San Diego or Tijuana at midday that are unreadable or very weak (even on a radio with good selectivity) down in the main LA/SB area. Is it possible that rather than hearing their groundwave, I'm getting the initial upswing of their very-low-angle skywave BEFORE it approaches anywhere near the D-layer? I also routinely get San Diego and Tijuana FMs with fairly decent signals in those spots too.