Brian, I have about 150 playable 45s, some of the others (my wife's and my sister's) are "partied out" with scratches and scrapes. I tended to buy LPs, and have a couple thousand in an eclectic mix, and few thousand 78s (mostly opera and jazz).
Here's one of those 45s I bought late in my collecting, by Ultravox, that has incredible sound for a 45. (I also have the LP.)
https://www.youtube.com/embed/4zRkIbUi01k