I got a pico around a year ago. It is the best product easily made by them the others are watery sort of thicker normal black drip coffee. Pico when the grounds are grinded to the correct diameter(very small) makes espresso shots almost or in comparison to a cafe shot! It's one of my favorite purchases for 129 on amazon. Needs a scale for sure, I also got an extra Normcore 51mm puck screen to use in it as well. I would say this or the base flair is the best at home espresso that isn't a "machine" Also I can travel with the pico. It's really amazing!
I was looking at the Nanopresso, seems like a good middle ground between size and price.
The reviews I've seen of these strongly suggest they do NOT make good espresso vs. a proper machine. Have you found differently?
I haven't committed to a purchase yet.
They come halfway close, but not enough pressure in the end.
They are also not going to last you very long especially if you use it a lot.