Sorry to hear how things are going for you both!! After have 1 failed cycle so far I can only imagine the devestation of multiple failed cycles!!
We changed clinics before we even started as I felt the first Dr wasn't that interested in us and out situation just giving 'standard' advise. Our current Dr I liked from the moment we met him.
My one thought is could you make a few appointments with a few different specialists and see what each has to say before you decide who to go with? Go in with your history and ask what they recommend.... Then you can see if they are just going over old ground or have new ideas on how to approach your particular situation.
My thoughts are with you both!!