Pros: All-metal construction, dual belt drive, generic/inexpensive supplies, durable, repair-able anywhere
Cons: Not a featherweight, sewer must do own thinking!
I own 3 of this model Necchi, all purchased on EBay. I got one new in the box for $40, and paid around $25 for the other two that are like new. A visit for each to my trusted dealer and they were/are adjusted perfectly.
For those into sewing, this Necchi is like a trip down memory lane, say 30 years ago. The only electronic part on this machine is the pedal. All mechanical. Metal frame, metal body. Double belt drive system. Front-loading bobbin case that uses generic #15 bobbins.
This machine has made the rounds. I have two Bernette machines (sold by Bernina) that are identical to the Necchi except for cosmetics. I have a Riccar 750 that is the same machine, except it has a rotary hook. And, of course, it was/is being sold as a Necchi! The good part is that the machine is so generic--there may have been other brands also--that any competent sewing machine dealer can tune it up and repair it. As stated above, it uses #15 bobbins that are practically free.
So how does it sew? Very well, thank you. No, the stitch quality doesn't equal my Berninas, but then no other brand does. Being completely mechanical, it requires the sewer to have some knowledge of stitch length and width, and the principles of sewing. It uses regular needles--stick to Schmetz for quality. Of note is the unusual bobbin winder. Like the old Vikings, it's on the end of the machine under the handwheel.
Again, for the economically-challenged sewer, this machine will use any generic low-shank feet or a generic snap-on foot holder.
I don't find this machine has a lot of personality of its own. Perhaps that's because it's been sold under so many names. However, all three of mine have had their use, and I've never had a problem with any of them. They do what I ask and don't complain. No, I don't try to sew upholstery with one of these, they're not designed for that. Of note is that there is an adjuster to fine-tune the buttonholes and also fine-tune the stretch stitches. Many machines, even the newest, don't have that. It does make a nice 4-step buttonhole.
I wouldn't dream of buying one of these new. They come up often on EBay for a fraction of their original cost. I say, buy it as a Necchi, a Bernette or a Riccar and the purchaser will be much, much better off than with a Wal-Mart Brother. I expect to pass all three of mine down to my descendents!