I have a Londinium R24 and a Decent. I'm not sure if they are mid-range but I love both. The Decent has taught me so much about espresso making. The Londinium makes insanely good espresso consistently. Both offer flexibility that allows you to make anything at any roast level, assuming you pair it with a good grinder. If everyone likes medium to dark roasts, I'd suggest investing more in the grinder and getting a reliable E61 group.
I have a Londinium R24 and a Decent. I'm not sure if they are mid-range but I love both. The Decent has taught me so much about espresso making. The Londinium makes insanely good espresso consistently. Both offer flexibility that allows you to make anything at any roast level, assuming you pair it with a good grinder. If everyone likes medium to dark roasts, I'd suggest investing more in the grinder and getting a reliable E61 group.