I can tell you a little about platinum, from experience. My wife suprised me with a platinum and diamond wedding ring on our wedding day, at the ceremony. As much as I love it (yes... I love diamonds!! Mmmmm... diamonds! I need more!!) and platinum, don't get me wrong, when it scratches, it is hard to buff out. I have had my ring cleaned and buffed many times and it is permenantly dinged, scratched, and chipped. Platinum is harder than gold, but is also harder to make pretty again. I believe it also has a resizing problem because it isn't as malable as gold.

That being said, I love to wear my platinum and diamond wedding ring... it makes me feel pretty. At work, though, I wear a plain white gold band that I'm not afraid to scratch. I remember seeing the titanium rings at a couple jewelers, but no one tried to talk us into buying them. As cool as they seem, and the price is great compared to the precious metals, do a bit more research on it before buying them. I'm not trying to tell you NOT to do it, but look on the net and see what others are saying.

Oh, and congrats!