Seems like reinventing the wheel........
I've seen multiple manufacturers claiming to out perform K1, have more surface area, moves better, cheaper...... BUT the thing I fail to see is someone else making the "chips" that are used with the K1/K3.
Seems to me that while everyone else is trying to make better media Kaldness has already moved on to the chips, and when someone figures out how to mimic the K1/K3 then they're just going to have to do it all over again and figure out how to make the chips in order to keep pace with Kaldness.
I'm in the same boat always looking for improvement but decided a long time ago that until there's no debate about a media outperforming Kaldness I'm sticking with it as my main source of bio. Am learning very fast though that it can't be your ONLY source of bio cause boy does the stuff hate meds. I just had to set up another reactor to deal with the floating issues that arise when using meds. The media will float on the foam caused by the meds actually allowing it to dry out once enough floats and it locks up (quits tumbling)