Well, dangit
I really, really wanted to hate these. I fully expected them to feel awful, to hurt my ears like before. I wanted to prove to myself that I wouldn't like them any more than my AP3s, and that I should return them.
BUT AFTER A DAY OF USE, THEY'RE AMAZING.
Granted, I finally figured something out - on the APP1s, I always tried the medium or small tips, and they hurt so bad trying to cram them in my ears - I have tiny canals - and never could get a good seal, and they'd always fall out, and my ears would get hot and burn.
With these, I've actually found the large tips fit best, just sealing the opening of my ear, and now I get a consistent seal every time, and by golly, they sound so much better than the AP3s; much more full sounding. AND SO COMFORTABLE. I barely feel them! And no more burning or hot ears like with the APP1s.
Going to wear them for a few more days, but looks like I'll be selling my AP3s....