I recently bought the small Espro and almost immediately purchased the larger one as well. I had sold my Bodum Columbia (4-cup) press, as I was tired of silty coffee - even with the break and scoop method. The Espro does a great job and produces some tasty coffee. I find that a good extraction in a press is much different than a good pour over cup. My Espro cups have been sweet, very full bodied, with integrated acidity. The same coffee in a pour over is sweet, clean, and bright. To me, they present different aspects of the coffee. I like the Espro presses because they are perfect for travel due to their durability.
Regarding the grounds left in the Espro... Espro has said that due to the fact that water cannot escape from under the filter once the filter has been pressed (unless you remove the plunger and plunge a second time - pumping air), the water above the filters cannot return to the grounds. The filters are too fine for water movement. Therefore, once the pot has been plunged, the coffee can be left in the pot for a short period of time. I believe there is a video of the larger pot being tasted after 25-30 minutes with good results. I have not tried this myself, but will at some point.