aborning

I am selling my Viking Emerald 116 because shortly after i bought that machine, I bought a Bernina 440QE with the BSR so I could do stitch regulated quilting. I have not used my Viking machine much since buying the Bernina--except to take to quilt classes). I wanted to give it to my 18 year old daughter but, of course, if it isn't computerized it isn't good enough for a teenager!! I want to buy her a computerized sewing machine for under $500. I would like a lightweight one so I can also use this machine to take to quilt classes. I have seen several computerized sewing machines under $500 but I also get paranoid about buying something that is "too cheap"! Anyone have any suggestions on a pretty good computer sewing machine for under $500. It wouldn't get alot of use because my daughter doesn't have a whole lot of interest in sewing/quilting yet. I am hoping if I get her a computerized machine that is "hers" it will help peak her interest.