Brother CE4000 is what I normally take. Bought it "like new" off Craigslist for only $60. It's lightweight and relatively small but will do a lot of different stitches. Janome makes some lightweight machines that are really good. The Magnolia comes to mind. You might even check with a local dealer to see if they have any trade-ins or demo models of some of the smaller machines. You can usually get those for a very reasonable price and they'll usually have a limited warrenty.