I have chosen not to find out, found out by accident and was at the same crossroads you are.
Then I had my scan and told the sonographer no. But the picture was so good and clear, she didn't need to say it. Now I find myself wanting a confirmation. I had no baby stuff left either. The shopping here is so pathetic and it's really hard to find 'neutral' stuff I actually like. I also want to make some funky sheets....none of this pukey baby pastel colours, but funky and loud.
And yet DD's birth was so exciting since we didn't know. DS's wasn't quite that exciting, not that it wasn't exciting but.... you know.....

So. Now I'm stuck. DH desperately wants to know. I have another scan on the 15th....but I still don't know what to do. I haven't bought anything specific since I can't be sure, but do I just wait for the surprise?.....