I have several solutions. One is a bookcase that Target has as part of their "Mission" collection. I got one when they had a really good sale. It's not perfect. As is, I can only use the bottom three shelves. I could probably use the top shelf by drilling new support holes, but so far I haven't done that. (I have no trouble finding other stuff to store there.) I'm also not sure that it will last a lifetime. But, it's held up for several months, and I like the real wood.
I've got records stashed away here and there, too.
In the long haul, I've thought that maybe, just maybe, I should try to build my own shelves.
I've thought that what I might do is set it up so that I have one rack with the equipment to store favorite records, and records of current interest. Then, some sort of cheap, modular (probably particle board) shelving system to hold everything else.