SunRace SLR-80 -
SunRace | SLR80. My first foray into indexed shifting on my 1973 MKM. I went for the 8-speed even though I use a 7-speed freewheel because it came very quickly, and the SLR-70 would take a week. I like this a lot better than my Suntour Power shifters. The combo, with a Suntour V-GT, missed a shift or 2 on my first ride, but it's a big improvement over the Power-Shifter - V-GT - Ultra-6 that I used until a week ago.
I brought the bike into the '80s. I probably will keep it there. I can see how a 10-speed cassette could be useful, if I could specify a cassette that suits me - maybe 15-16-17-18-19-20-21-22-25-28 or maybe 15-20/22/25/28/34. That doesn't seem possible.