Nice review - new info even for such a simple item. I had not really considered that it is better for them to bottom out - I've been beating up my jack-points all this time. Review is just in time, as I'm about to order a full set (have just a single cheapo now). I do wish they had some kind of 'grabber' to hold up inside the jack-point so you don't have to be as picky about alignment, but with a taller rectangle it won't be as difficult to get it to insert cleanly.
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