Users.... users want mpegs... for compatibility... webmasters though, they want wmv for file sizes... bandwidth!
So, the question is.. do you give the surfer the 200M mpeg to satisfy them, or the 60M wmv file to satisfy your wallet...
it's a little tough to decide. I guess it depends on your bandwidth prices.
We offer wmv files for now, but will be redoing everything into quicktime, so that we can appeal to pretty much all platforms at least in some way. Windows, Quicktime... you have those two, you have Windows, linux, mac... the works... and low bandwidth usage.