PM. because the palm springs mini is rather doddy size. I thought it was for children when they first came out. Thought LV had brought out new sizes for kids. But then I saw one of the kardashians on celeb photos thread I think it was wear one and realise it's rather trendy casual or cool to have mini size bags at the moment. So I'm wondering is it just a trend. I think PM is more classic and wont date.
I had the same dilemma not too long ago. I ended up with the pochette metis...however, I couldn't get the Palm Springs backpack off my mind so I ordered it. We'll see if I end up keeping it. Good luck!!
I have PM mono and sold it due to glazing issues. I still want the bag, but maybe later. I love PM but I just lazy to deal with issues. I just get mini PS last week and I super love the bag.. I think more than I love my PM..