I'm 69 and have limited hearing above 2k in my right ear. In 2016 I also did the RAAL/NrT debate with myself about getting older and wondering if my hearing would get worse with time or that my hearing wasn't good enough to justify/appreciate a RAAL purchase (the additional cost was also a consideration).
I'm a music lover, so I decided I might as well enjoy the best sounds while I can (and the wife gave the additional cost approval
), so I purchased RAAL towers and horizon and love them. They sound great whether I'm playing them softly or loud (an excuse for having hearing problems). And I agree with Randy, RAAL horizons as main speakers would be very tempting.
Can't speak for 70+, but I'm still appreciating these qualities at 69.
Good luck with your decision!
Jack