Hooligan, going by your signature, you have definitely caught "the bug!"
My main sewing machine for ten years was a 15-91 - I quilted a lot of huge quilts on that baby. I'll never get rid of her.
I bought an industrial Juki with an M bobbin a couple of years ago for making bags and wallets and I hardly ever sew on anything else now, but I have about 30 vintage and antique machines.