There’s lots of misinformation on the forum about Costco hearing aids. It is not true that their hearing aids are several years old. I think different manufacturers handle things differently. Resound used to sell hearing aids to Costco with different names, but that were very similar to current Resound models. They changed that and came out with the Jabra brand which is sold outside Costco, but the Enhance Pro 10 is exclusive to Costco and seems very similar to Resound Omnia, Resound’s latest aid.
There have been reports that several Costco hearing aid models retain tinnitus features (available in the programming software) but Costco won’t deal with those features.
I think people would be a lot better off if they’d pay less attention to hearing aid models and put time and effort into working with their hearing aid provider. If one likes geeking out on this stuff (I plead guilty), fine, but if one just wants to hear, it is not necessary to become a hearing aid geek.