Chalk up another "CQR" on the bow

I cruised on two different boats, and both had CQR's for the main bower. Granted, this was ten to fifteen years ago, and the new crop of "modern" anchors was just getting going. I guess the main reason for sticking with them is that one, they were already on the boat; and two, we never dragged in hundreds of nights of anchoring. Once you develop that "history" with an anchor I think you grow to appreciate it. On the other hand, if we had dragged a few times, I'm sure anchor shopping would have moved to the top of the list!
But also like you say, I think a lot depends on the ground tackle system as a whole. On those boats I had all-chain rode, very long snubber, etc. -- so the anchor had a lot of help from the rest of the system. And also like you say, technique plays a part. We took our anchoring seriously and so put a lot of stock into where exactly to anchor and how to deploy and set it. Spending some time in the tropics is fun for really being able to see how the anchor sets and acts (because the water is so clear and relatively shallow).
I find the C-Dory to be ... well not a whole new ball game maybe, but certainly a different inning. I can't support the same ground tackle (weight/space), and too, the shape of the boat means different spots are available (shallower, etc.). Plus it acts differently.
So far I've only anchored around 30 nights on the C-Dory, and maybe six of those were "windy" ones. In most of those cases I had two anchors out (in a "V"), but not (mostly) for holding; rather it was to check the swing (now that is very different on the C-Dory - it's like anchoring a leaf!). I was only "nervous" one night, on which there was chop coming into the anchorage (the wind was veering through the night [yes of course it was at night!], so it was hard to find a truly all-weather anchorage) and so the boat was hobby-horsing a bit (plus sailing). The bouncing scares me more than wind in terms of loosening the anchor (plus chafe potential). Thankfully all went well, and there was neither dragging nor chafe - but I did worry about it. But, it was good to get some experience with various conditions.
BTW, I wouldn't even consider using that "slot" on the Manson Supreme for overnight or unattended anchoring. Maybe that's just due to the majority of my anchoring experience being on different boats, but it gives me the creeps! I just use the normal hole for the shackle and ignore the slot.