What everyone else has said, and...
Don't limit yourself. Ride WSD. Ride regular frames. Ride different manufacturers. Get the bike to fit--doesn't matter WSD or not. As you've read, it's all in your own body geometry. I'm 5'4". I have a short torso and average length legs (in my opinion). I purchased a WSD bike--fit me great.
I got a big kick out of a different salesman at the store when I went to pick up my bike. He looked at the bike size, and then asked me "you have pretty long legs, don't you".:p I had to laugh, since I've always considered myself stumpy. But in "bike" terms I do have long legs compared to my torso length.
So try as many as you can. You will feel the difference--even if you haven't ridden lots of bikes before. Some are just more comfortable than others.