Freshness is great, yes, and the quality of the beans and roast are usually higher from places that actually disclose the roast date, but grind is very importan

Freshness is great, yes, and the quality of the beans and roast are usually higher from places that actually disclose the roast date, but grind is very important. Coffee is very much about the extraction: under-extract, and the coffee will have a sour edge; over-extract, and the extra caffeine extracted will bring bitterness to the cup. Using a blade grinder means introducing a huge range of differently-sized solids that will extract at different rates, meaning even if you hit a nice middle ground, you're introducing sour and bitter flavor components into your cup. Burr grinders provide a very even grind and minimize this. Next time you go to a place that roasts freshly, try to take home a little bit pre-ground. It will have less flavor (due to rapid oxidization), but the flavor should be better: more balanced and consistent (as long as it was a good brew). Don't get me wrong: pull an espresso shot from just-ground coffee, and pull another one from coffee ground 15 minutes ago, and the crema deprecation is pretty amazing. Pre-grinding kills a lot of coffee's oomph. Still, blade-grinding mangles a lot of coffee's hidden potential :)