I think we had a thread similar to this before. Mine was the Yashica TL Super, with the Yashinon f/1.7 or f/1.8, which I got in late 1970 or early 1971, while in Quang Tri, Vietnam. I had been using folders and a minolta 16 (My Weilti was scratching film). I had looked at the PX magazine for a long time, comparing the Nikon, Canon, Minolta and other cameras. I finally settled on the Yashica as I knew the brand from a movie camera I once had.
I didn't really use it much until 1974 when I was in Korea. I really got back in to photography then. My first two lenses were Yashikors, a 28mm and a 135mm. Next was the Spiratone 18mm. Next came the Fujica ST 901 and a lot of gear to support those two cameras.
I stilll have them both but the mirror on the Yashica often sticks up so I haven't used it lately.