Have you thought of Magnepan I'm an older guy too and they sound wonderful to me. The 3.7i should be great with your 2 subs.
purchasing US made speakers
I currently have psb imagine t2 speakers. I am interested in replacing them with US manufactured speakers 10-12 k being the maximum price....perhaps aerial acoustics, vandersteen,,,,,any thoughts? My hearing at age 70 diminishes at 8,000 hz so a good midrange is probably good.