I love receivers for when my focus isn't on audio the whole time. I honestly don't even think I could remember all of the receivers I've had in the last 10-15 years.
Memorable ones:
Sony STR-6800sd. Just sounded nice.
Yamaha CR-2020. Pretty
. Didn't care for the sound, though. I wanted to like it I swear!
MAC-1900. Classiest, which is why I kept it.
MAC-4100. Just different looking. Cheap vinyl clad cabinet was its death sentence.
Sherwood S-8900a: Oddly antiquated looking. Very heavy for its size. Made down the street from where my apt is in Chicago.
Sherwood S-7100a: It's like they grown on trees in Chicago. They're everwhere. I had at least 2, maybe 3 of them.
Pioneer SX-1280: memorable for how terrible it sounded.
Sansui 9090db: My first vintage receiver, one of the last I sold, and still one of my favorites for sound. Yucky phono stage, though. (Like most of them, in my opinion).
Scott 737: Nothing notable except it looked pretty much like my KLH (OEM scott?) and sounded awful.
KLH Model 52: Nothing notable except that it looked almost exactly like my Scott, but sounded better and my niece still uses it.
Pioneer SX-939: gave to my neighbor's store. They promptly used it to blow up the Geneses Model 10 speakers I gave them.
HK 430: So pretty. Made me want a Citation Receiver.
Marantz 2275: Pretty!
Onkyo TX-2500mkII. Actually had a nice phono stage, better than any other receiver I had I think.
Onkyo TX-4500: sounded worse than the two 2500s I had.
Sansui 5000x: Just sold this. According to my wife who handled the sale the young guy was thrilled, which makes me happy. It was well taken care of, hope it treats him and his records well.
There were more but those are what I recall. See, now I'm getting all nostalgic for my receiver fetish days.. and the above list is also why I roll my eyes when somebody tells me I don't know what I'm talking about when I say I prefer modern solid state to vintage. That, and my list of separate 1970s amps is almost as long...