I have been following this discussion re: different pumps
resulting in different milk yields.  I work at two different
sites that rent pumps.  One site charges the same for both
pumps the other charges quite a bit more for the classic.  I
see mothers who definately experience more luck with the
classic and have informed the manufacturer of this.  The
pity of the situation is that at the site where they charge
more for the classic we hesitate to give it to them and I
have been questioned about it when I did.  I often feel like
I am taking advantage of a mother who is already in a
compromised situation by charging her more.
Denise Parker