I have been using the ES 3571 for almost a year. You can juice currants, but the seeds are crushed by the press cone (you can hear them) and go into the juice, which becomes cloudy. The size of the sieve does not change this. By the way, the whole seeds would be too big even for the coarse sieve. The same applies to pomegranates, the seeds are crushed. So you have to decide whether you want the complete contents of the fruit or the clearest possible juice. When I want a clear juice, I use my old juice centrifuge.

It has 3 different. The smallest one will work.

You can adjust the size of the sieves so I think so!

Yes, you can use the fine sieve.