I only have 1 current system setup and it is mostly vintage. Why vintage? For me is because I find quality vintage gear much more affordable and still very musically satisfying than new gear in my price range.
A pair of McIntosh MC40s, Conrad Johnson PV10-A, Altec 604-8G Model 17s, Technics SP-25 TT/ATP-12T arm, Denon 103R, Cinemag SUT, Marantz CC65SE CD.
For the cost of the above system, I don't think I could have done better. If I could, I haven't heard it yet.
I am also close to putting together a vintage mono system and have (more than enough) gear to do it, but the amp, preamp need recapped first. I also need a mono cartridge. It will consist of an old 1929 Victor (pre RCA) theatre amp, Brook Model 7 preamp, Electrovoice Georgian factory built speaker, Thorens 150 with SME 3009 arm. I realize this TT/arm/ cart will not be the best match, but it gives me something to start.
There are those of us who can't afford to play in new or lightly used gear, so thankfully there are some great vintage pieces to fill the void in our hobby.