I don't know how many people have tried
Barismo outside of the Boston area, you can order on their site, but they're just down the road, so I'm not sure how their online service is. Their line up is constantly changing, and I'm never sure what's going to be available when I stop by, but I've tried a few excellent offerings from them in the last couple months. I'd recomend them to anyone, especially if you're looking for something different/interesting to try. Here's a few thoughts:
"Espresso 7" is usually available, and is as close to a 'comfort food' espresso as I've tried from them, it usually ends up tasting like a nice Costa Rican blend when I pull it (even though it's mostly Guatemalan).
They have a decaf Sidamo (which I don't think is on their site), which is excellent, nice and clear and balanced, I would never guess it's a decaf.
They just
updated a couple of their blends, so I picked up a bag of SOMA, which is their "flagship" espresso blend, even though it's only available intermittently. This iteration (which is the first I had the chance to try) is excellent, and very easy to pull shots with. Dialing it in was almost comically easy, with the first shot I tried coming out thick and syrupy and delicious. Black cherry with some orange and caramel, very thick and creamy, and nice sweetness too. Didn't really work as a macchiato though, but I could drink straight shots all day (and pretty much did this weekend).
Also picked up a bag of "Lucid" a Colombian 2-bean blend, that I'll probably crack open this week.