I would suggest going to the boutique and trying them both on. It seems that from everything I have read, LV is quick to repair, or exchange the NF's that have problems, so I wouldnt let that stop you from getting an NF if you would prefer a shoulder bag. I love the speedy best in the 25 size, I think it's really cute and the ebene is a great way to start, the easiest to maintain.....If you are normally a shoulder bag person I would probably start by getting the NF PM. Again though, I would definitely go to a boutique if you can, and try both styles on. I bet you'll know right away which one you like best! Good Luck with your decision!