I'm not a pump person, but StellaMarie just posted an article on it here. It's good reading, so please take a look at it.
We have a few members here who are on the pump, and maybe they will chime in here for you.
I'm thinking one advantage of the pump is that the meds do not go through the Liver directly as the oral meds do. I'm not sure about
Also, I have been told several times that you must have a Dr who is an expert on the pump to see the best results. This is probably the single most important item, that will have a majior effect on how well a person will do on it.
Take care, and good luck to you, and your appointment tomorrow.