i seen your's hammy, they were nice. it has to do with differing styles i think. what i didnt care for was how fast mine dried out, and having to pull them out individually to water. its a pain to pull out 25 plants and water one at a time, and messy too, cause water would go everywhere, so had to sit them in a catch, and that was why i didnt care for them inside. had to clear that up. lol.
it's not feasible to put a nft tray under them in my set up, cause of the standing water it would leave. after using those one run, i really think they were designed with the od grower in mind. jmo of course...
someone said those walmart bags were weak, but would do in a tight.peace...