My hearing loss is probably somewhat typical … more or less a steady decline from low frequencies to about 75 or 80 db down at 8 khz.
So without aids: The bad news is that some speech frequencies are so impacted that some speakers, notably soft speakers and those with good hearing (like my 13 and 7 yo granddaughters) are hard to hear reliably. The good news is that the high frequencies of walking across a hard surface and/or squeaky floor, crinkling paper, a flushing toilet and many other such high frequencies are heard much more softly, and, at least by me, not missed!
My 1 year old KS8’s are working fine. I had the Costco person drop the highs by about 6 db (I wanted to drop it more, but the CC person resisted). But even still, with the KS8’s cranked up to around where my loss would indicate, I still find the high frequencies’ common noise sources mentioned a pain in the ear … so I back off the gain a little or a lot. I just don’t like them always cranked up that far.
So for me … the KS8’s work fine and are helpful … but I still don’t like the loudness of these high frequency noise sources in order to get a modest improvement in speech recognition, compared to no aids. I find the five programs are not all that different and leave them in the ‘auto’ setting about 95% of the time. Perhaps I’m just a stuck-in-his-ways person resistant to change! (It woulldn’t be the first time!)