I think the Pro will like this... price not too much a problem. Less than the 1Ds markIII, but more than the 1D markIV (US$2000 more).
As Canon will sure use those sensor on rest of the lineup... hopefully the 5DmarkIII will be same ISO level and with a updated AF. This AF points config was brand new since EOS3 (1998) so its here to stay.