I gather you have a Europiccola? Ive had mine about 3 weeks. Got a roasted sample pack from the bean bay.
I drink double espressos.
Fiefys Latte art. Dont like this much. My son does but he drinks milk with it.
Ethiopian Harrar Longberry. Absolutely Lovely. (Drinking this at the moment)
Sumatran Mandheling Select. Very Good.
Colombian Volcan Galeras. Very Good.
Id suggest you get a sample pack and play around.
Had some costa rican something or other from seven seeds and it was excellent but expensive.
The Grinders house blend I used in my old machine isnt so good in this machine as was an espresso blend from a local roaster (Caffe Romeo).
I rarely produce anything undrinkable now.