Having just been through the process you're going through now I can definately sympathise.
My consultations were conducted by email and over the phone, I live in Australia so travelling a long way just for a face to face consultation was a bit impractical. I know with Dr Zukowski you wont need to go have another consultation with him (I only met him when I arrived in chicago for surgery).The consultations I had pretty much went like this. I sent them pictures (front, sides etc...) and they sent back a list of procedures they'd recommend that I get done. I then emailed questions, had phone conversations etc...
Some surgeons will have revision policies, definately ask each surgeon you consult what their policy is if something goes wrong or you don't like something etc....
Going in with a bunch of questions is a good idea, here's a few I asked:
how long do I have to stop taking hormones?
What is the recovery time (i.e going back to work, going back home from surgery)
what is the waiting time to get surgery (Dr zukowski was ~3 months, DiMaggio ~9 months)
Revision Policy
Cost
Of the three surgeons you've listed I only consulted with Dr Z, he definitely tried to talk over the top of me and just take over. That being said he did say "it's your choice, but I recommend..." and if there was a particular procedure I didn't want he wouldn't do it. Try to stand your ground with him (it's difficult, I know) and know what you want and why you want it. I was skeptical of a few procedures that he thought I should get, he made his case for why I should get it and then said the decision was in my hands.
Each surgeon I consulted also gave my prices up front, I didn't even need to ask them so that part was easy.
One thing I noticed was that each surgeon was quite gung ho, saying they'd make me stunning and that they could do better work than any others etc... try to take this with a grain of salt. I think to be a surgeon you have to be quite confident, thus the whole self assurance thing. Remember you're paying the surgeon to change your face, not to be your best friend.
If you haven't already you should explore the ffs yahoogroup, they've got a lot of useful information (as well as a lot of crap info too!). I also used the Virtual ffs thing, but didn't find it all that helpful.