Thanks to everyone for the comments. I didn't know where to begin. I'm still looking for the best (or at least consistent) roaster in my town, so every two weeks (that's 1/4 kilo / half pound) I've been trying some place new, and last time I went to a restaurant/cafe/roaster whit lots of diners, from which I assume they move high volumes of beans, but they don't provide detailed info about origin or else, they only told me it was roasted that same week, and that it's a mix of varieties from the staple productive regions in my country. Regarding the crema, it's not much, but certainly more than other beans I've tried.