Jay,

I like your approach of telling mothers that

"some of those pumps work for some moms, but that mostly I have heard that
they don't work *as well* as the ones we all know are the best."

Legal issues aside, I think it is counter-productive to slam the competition.
 (Are you listening Ms. Robin?)  I would rather not state categorical
opinions on something of which I have no personal experience.  I would rather
say, "Many mothers have found...",  "I have heard that...",  "I know many
women who...", etc..  A mother is more likely to listen when we speak gently.

Lesley Robinson, IBCLC, LLL Leader
Corning, NY