Depends on your case. And of course you’ll have a choice. It will be your decision to make. IUIs are not as invasive as IVFs. So lesser medication, lesser pain, lesser time per cycle, lesser costs. But also lower success rate than IVFs. I went through 2 unsuccessful IUIs before deciding to move on to IVF. Generally doctors recommend trying around 3-4 IUIs befire considering IVFs.