The Wall Street Journal Test Kitchen tested 5 bread machines this February. See the article here.
They tested our favorite bread machine from Zojirushi and it got pretty good reviews. The only cons they pointed out were its price, and complicated manual. It is more expensive than many other models, but you get what you pay for with the Zojirushi. It is beautifully built, solid, and the only machine on the market that produces a traditional long loaf with a full length crown instead of a tall tower of bread with a small crown. The WSJ also mentioned how quite it is. This is a very important point. Many bread machines will send you running into the kitchen to see what fell off the counter!