pumping machines?

Miriam
What types of pump machines do you use and how does it feel?
I've got the medela pump in style and it's so painful for me. It tugs my nipples really hard and I'm on the lowest setting. I get about an ounce per breast at each pump, after LO eats. 
I read someone has the spectra and it was more of a "massage" than a tug. Anyone else have different experiences with their machines?