I have:
Singer 1956 99K - use it to piece
Janome sewing/embroidery - for most of my stuff
Elna sewing/embroidery - just bought it used and have it in the shop getting fixed. Hoping it will replace my Janome and I'll use that for backup.
White serger - for seam finishing
2 regular sewing machines I don't use much, but may try later to incorporate one of them into my space.
All machines combined cost less than $1,500 over several years. Love them all!