Brother LX3125
First, this is the machine that I use to teach classes. I did quite a bit of interneting and talking out loud to myself in public to decide which was the best machine for teaching purposes and this is the machine that stood out above all for several reasons:
1. It is extremely user friendly. This machine has all of the necessary functions for sewing clothing, home projects and crafting and it doesn't take a scientist or a professional seamstress to figure out how to use them. Easy peasy.
2. It is inexpesive and easy to find. I have found this machine for as little at $58.00 and as much as $74.00 which are both very good prices when it comes to sewing machines. Also, Brother's are available at Target, Walmart and Costco (occationally) - you do not have to venture into a sewing machine retailer - which are great places, but overwhelming sometimes for the novice sew'er.
Brother XR-9000
Second, this is the machine that I got for Christmas... the creampuff. This machine has 80 built in stiches, over 120 stitch functions and you might wake up one morning to this machine brewing you a nice cup of tea and giving you advice on your outfit...it is that awesome. This is the machine that I would reccomend if you are serious about this sewing stuff, if you dream of sewing, if sewing is on your to-do list every.single.day. It really does the job and asks very little of the person sitting in front of it.
Riccar 2600 Super Stretch
Third, the always dependable, extremely fast and efficent Riccar. I love this machine. It makes the most beautiful patterns and asks nothing in return. Riccar's as I am told, were like 'the thing to have' and I can see why, they sew like a dream. Which also leads me to fourth, the teal beast of a Riccar, that takes arms of steel to transport. This is also such a great worker though not many bells and whistles so I don't use it as much as a used to.
Riccar (Who knows? Vintage...the super heavy model)
If you should have any further questions or thoughts, I am happy to answer...I hope this is helpful.