Screen print is much better quality than offset. It has thicker colour layers and as it has a much lower resolution, so you have to make it work in other ways than just throwing halftones in it. This mean that the artist or at least a knowledgeable repro man has prepared it for the technique (here probably the artists himself.)

I have a lot of fantastic screen print artworks made by friends of mine. As an artistic media it has some special advantages that is very fascinating to work with. I have made lots of print in this technique.

Off-set is harder. In reality it is like lithography, which is the technique where you can get closest to the hand of the artist (that was clumsy) - but each little thing you do on the stone is recorded in high detail - it is one of my favourite methods. But even though the technique is the same and you actually can work directly on the plates, what you get in offset print is normally just a repro of a photo... and here we are pretty far away from the artist's hand.

I don't care for such things either.