My little sewing room consists of :
1986 White serger, threaded with dark thread (a workhorse)
1994 Babylock serger, threaded with light thread
1992 Singer Electronic 9143, 140th Anniversary (for traveling)
Viking Sapphire 850 for decorative stitching
Juki TL98E (another workhorse) for piecing and fmq
And a beautiful 1956 Morse 600 which I have just acquired for a great price of FREE (presently in for maintenance check) Don't know much about it yet, the belt was dry rotted and the cord was cracked.
All my machines are set up and used regularly.