I don't know if you want to include my husband. He's a regular lurker on this board, and is the one that got me started here. He has his own collection, with just a few that I pretend are mine. I think he's got around 15-20 machines, and can't pass up a decent shape CHEAP machine. His latest was the Wards Singer 15 Clone made by Happy. He is my OSMG and is getting very good at cleaning and adjusting machines.
His favorite is his Singer 201 and he sews a lot of "gear" and is getting quite good at it. So far he's shown no interest in making quilts - though I keep telling him it's good practice!