pro what? con what?
eventually I hope you either give up or figure out what I am getting at.
no wait, I'll make it obvious. the whole thread is chock full of opinion and conjecture being passed off as "fact" by people who have no business saying a damn thing about it. Self-appointed experts. I find it pointless to even be specific about it when that one picture just makes a perfect fit for the thread so far.
Here is some data in case you really are interested in how much of a difference a wheel makes (with no silly guesstimates as to what MPH you will go, or what the difference in cost is, or whether it matters for professional cyclists versus amateurs, or any other nonsense).
http://www.rouesartisanales.com/article-15505311.html
Want to know what difference those watts will make in speed? try this:
http://bikecalculator.com/veloUS.html
I have a lot of wheels. Some of them are aero. Some are not. I have raced a lot (close to 200 races now). I have a very aero setup for time trials. I know how much I gain from a ten-watt savings.
That does not make me an expert and unlike many in the 41 I know when to STFU and let the data speak. Don't listen to me. Follow the data.
Oh, and by the way, it's a funny picture just in case you hadn't figured that part out.