Large breasts? Medela PISA or Spectra S2

Nicole
I'm a 38 DD right now but I know I'm not in the right size bra (I'll get resized after baby comes). I plan on breastfeeding and will need to pump when I go back to work. I've heard that most women prefer the spectra but I've heard it's bad for women with breasts size D or larger. Has anyone with large breasts used the spectra? Did you like it or was it hard to pump?