I'm sitting in my office and surrounding me are 33 prints, one a gift from a friend, one of mine framed nicely, the rest simply pinned to the wall. I've tried rails but my standard paper (enhanced matte or whatever they call it this week) is too flexible and won't stand up on a rail without either falling forward if the rail is too narrow or slumps if it's wide enough - pin holes are easy to fix.
Do you immerse yourself in your work - can you visit your prints several times a day, even if just in a glance?
Interesting things happen when you expose yourself to your images this way. Minor flaws start to really bug you, images that wowed you at first, after a few weeks you wonder what you saw in them, other images that were kind of so so start to appeal to you and a select few grab you just as much as they ever did.
I'm convinced this repeated viewing of our images is important to our development as photographers.