They aren't big enough. They are nothing special. They don't stitch any better than any other quality straight stitch machine. They are under powered. But yet there is a cult following for them. Go figure.
My wife has wanted one all her life. Two years ago around her birthday I bought her one. Complete with accessories and good wiring. I paid around .... well less than average then, and was OK with the price.
Now, that poor machine has been cleaned, oiled, tested - by me, and just sits. My wife wanted it sooooo bad, yet now that she's got it .... she don't use it. What can I say?
Joe