I offer that I use a pair of studio black Polk SDA-1C speakers (circa 1988] in my main system and I feel they continue to serve me very well. [I note I've upgraded the tweeters to what I feel is an improved version via Club Polk, treated the internal and external connections with Walker SST, and have a crossover upgrade planned - the internals do have some age on them.] I love the soundstage width / height / depth these speakers provide with my gear, as well as the vocal and instrument placement. I accept that the 1Cs are not the last word in detail, although the crossover upgrade should add increased definition.
I've perused and pursued potential affordable replacements, and haven't come across anything that has convinced me to open my wallet. I continue to thoroughly enjoy the 1Cs, and IMO, that's what this hobby is about.
Additionally, I was given a pair of KLH Model Twenty speakers (circa 1965), which I've paired with a Fisher 800B receiver for my bedroom system. It a fun vintage system, albeit I was scratching my head when I saw the KLHs have a single RCA-type plug on the back - I think that qualifies as "old" in my book.