Bosch 800 Series Dishwasher Differences . The bosch 800 series dishwashers are available in 30 different models. One common question we get is the differences. SHPM78W54N Bosch 800 Series 24" Ultra Quiet Dishwasher with Flexible from www.designerappliances.com Moreover, which bosch dishwasher is the best? Just like a car that comes in different trim levels, bosch dishwashers come in 5 different series: Consumer reports tested eight bosch models which varied in price (at time of testing) from $600 to $1700 and found little difference in performance.