Go for what presents the smallest amount of hassle! I ‘lost’ an arm part way through my second batch of chemo (lymphoedema) and my veins got really sneaky and ran away, as I had to have frequent blood tests due to another slight problem. My oncology nurses were fantastic, so the fact that a port was never suggested was partially due to their own expertise, particularly the senior nurse (a gun stabber!). Once we got over frequent blood tests and had just three weekly herceptin, it was fine. But if you don’t particularly like needles or too many failed efforts, go for the port. Best wishes.