I have quite a few machines both electric and treadle powered. I've been teaching one of my grand daughters to sew, today we used my Bernina 1031(love the 1/2 speed); she needed zig zag. We were making a reversible tote bag, she got to pick fabrics from my stash. When C is sewing by herself she uses one of my 3 featherweights.
I have a Viking Sapphire 875(10" throat), 2 older Berninas, 930 and 1031. A Pfaff 1222E for when I want the built in walking foot, great for quilting or just general sewing. 4 Singer treadles & 6 heads:237,115(1914),66-1 red eye(2), 201K. A Pfaff 60 treadle and a 1917 White Rotary treadle.
The featherweights are a mere 11 pounds, so they are my travel machines for when I'm piecing quilt blocks with the 2 groups I sew with.
I use different machines for different tasks. For example when I need to zig zag a single layer of fabric, one of the Berninas does that without rolling or bunching. The Viking is mostly for quilting and really awesome buttonholes.
The treadles for when I want to watch and be able to hear the TV & plus they are relaxing to use. Some of the treadles are over 100 years old and still sew as well as the day they were made. All are quality machines that are a joy to sew with, no fancy computers and their issues to deal with.
The Singers that I use and enjoy are what the Singer name stood for: a good,well made, quality machine; unlike the junk machines that carry the Singer name today.(getting off my soap box)
Just like power tools, not all of them do the same thing well. Sewing machines are my power tools.
Sharon in Texas
p.s. Wow I had a lot to say. lol