yes, it is a very weird feeling... my teeth feel slimy without the metal on it. I've brushed my teeth 20 times today!
and yes, I do smile more now. I can actually smile now... before my smile was horrible. My mouth was so full of metal that I couldnt get the corners up, but now I can!
And I love my retainers... They're clear so you cant tell they're there unless I point them out! And they're comfortable and easy to talk with! I was afriad I'd get the traditional metal one, so when I saw my orthodontist had this for me, I was happy.