I picked up my KS7's last Wednesday and I've already decided to return the HI Health HA's. They make it easy, by the way. They e-mailed me a pre-paid USPS label and I'll send them back for a full refund on Monday.
Overall, I liked the Hi Health HA's, but the frequency response of the KS7's seems much better at the high end. The sounds I hear with the KS7's are as much different from the HI Health aids as the HI Health aids were from listening without HA's at all. In other words, I'm going thru a whole new period of getting used to high sounds I haven't heard in years. In addition, the KS7's don't make scratching noises when I move my glasses. The HI Health aids did make the glasses "live". Both sets of aids touch the frames of my glasses, but the KS7's aren't as sensitive to touch, so I can adjust my glasses without producing an irritating noise in the HA's.
One small feature I like better with the HI Health aids is that they use a voice to indicate what program you're in and what the volume level is, rather than a series of tones. My overall impression of the HI Health aids is that they work very well for hearing voices, but not so well on the upper ranges of frequencies. If they were $400-500 cheaper than the KS7's, I might have kept them, but the difference amounted to less than $150 and I think the KS7's are a significantly better set of HA's (based on a short trial and a lot of reading up here) than the HI Health aids. One note on pricing: the HI Health aids added $298 to bring their warranty and loss and damage coverage up to the level of the KS7's. That rankled me and it's what made the price of the two so close.
My hearing specialist at Costco set up four programs for me to try (1) automatic (2) noise and party (3) i360 and (4) telecoil. She would have rather just set me up initially with the first two, but I had her add the others. The rocker switch on the left is set up for "program up or down" and "on/standby" and the switch on the right aid adjusts volume. She asked me to keep a diary of my impressions and questions and come back in two weeks for a follow-up appointment. So far, I really like the KS7's and for me the whole process of getting used to HA's has been a lot easier than I expected. I guess I should have done it years ago.
After I have more experience with the KS7's, I'll post my impressions here or on the KS7 user's thread.