For. Reading up, people that have gone through this too, said to see what your insurance covers first which one. Then most of them said they preferred IVF. To skip IUI, but with everything if your insurance covers it, doesn't hurt to see if you have better luck being that we are all different. Do a pro and con list it sound that most people really did prefer IVF and they are around the same meds.
Also if it is going to give you a better chance of getting more follicles then what's the harm, but from what the doctor said to you, it sounds the same with no increase and I would stay with IVF.