To me it's not necessarily brand name, but configuration.
Given heat in a hole 2 barriers seems safer than these;
[Linked Image from gemini.genlyte.com]
besides, plumbers, alarm guys etc run right over them.....it does not 'reserve' the trim space...
These ( IC-Non-IC) i simply do not understand, the instructions require one to 'scrap the label off' for it to assume IC status....
[Linked Image from gemini.genlyte.com]
besides, all insulation is not equal, sme of these IC cans have holes, not too good for blown in insulation.