There's a nice Kenmore that goes on sale for around $179-ish. Regularly $249.99. Many reviews online.
Kenmore Drop-In Bobbin Sewing Machine - 90 Stitch Functions, Built-in 1-Step Buttonhole
http://www.sears.com/shc/s/p_10153_1...G3#reviewsWrap
Somewhere online is a demonstration video created by a regular gal. I know I saw it on the board months ago but can't find it. Not on youtube.
Hope you find something you like!