So long as you don't leave your filter coffee to stew for hours on end, then filter coffee machines are a terrific way of serving really top notch coffee. 

Many people let the coffee stay on the hot plate for too long - keep the maximum time to above 45 minutes.  Single origin arabica filter coffees do not last as long, blends a bit longer, but Viennese filter coffee can last upto about 75 minutes.

There are MULTIBUY Options here where if you wanted to buy 6 cases you only pay for 5.