I love these frames and so do my bees. I love that they are easy and convenient to use and the bees love the heavy wax and get started building comb right away. No worries about collapsing frames of comb.
I have used many plastic and wood frames over the past seven years. Acorn frames with extra heavy waxed foundation have worked the best for me. Bee build comb without issue and the frames are tough. I have used over 500 of the Acorn frames and will continue to do so.
Love Heavy dipped one piece plastic frames/foundation
I feel these are the best on the market. The bees take to them right away and I have had great success. Hold up well in the extractor, and I find them easy to move around in the hive.
Last year I ran a test in my swarm traps. Along with an old brood comb I places two frames of Acorn double waxed with a leading competitive brand. The other brand produced crazy comb not the Acorn. The bees took to the Acorn and built it out considerably faster and more evenly.