I like them too. In my deeps I cut out the entire center of each frame except for about a 1" strip all around, letting the bees fill it back in with natural comb. Seems like a waste of plastic, but the bees like building natural comb much more than they like drawing out foundation (ANY kind of foundation). This gives beautiful natural cell comb all the way to the edges. I use Pierco in the medium honey supers too, but I don't cut it because it needs to stay strong when it goes for a spin in the extractor. Speaking of which, I've had regular foundation blow out in the extractor. Could be my fault, maybe I'm spinning it too fast, but I've not had that problem with Pierco. Bees are a little more reluctant to draw plastic, but once it's drawn it's drawn. If they are reluctant to draw your plastic honey super frames, put the honey super between your deep boxes for a week or so during a flow. They'll begin drawing it out then you can move it back up top where they will finish.