We just got our STDs - like everything else, I was indecisive and found the process stressful. My FI stepped in and designed awesome STD Postcards at Zazzle (we are having a nautical wedding, and he incorporated an anchor, and our colors). They were about $200ish for 150, and we bought lobster stamps. They arrived and are nicer than expected - great stock, and a nice shine to it. The colors are bright.
Hope this is useful for anyone stressing about STDs

I think for the invites we're going to step it up, but I wasn't going to spend $500+ on postcards....