Definitely spectra for me. its the only affordable Hospital Grade pump i could find, and if u are concern about building or maintaining supply right from the start, i would recommend spectra s1/s2.
avent is loud compared to spectra. and spectra suction is stronger compared to avent. and I feel spectra is more worth the money.
im using spectra s1 at home, and medela freestyle at wk. i still prefer s1 as it can easily empty my boobs.. better suction.
I have the freemies and the spectra. Spectra is good :) Suction is good, not too noisy and very affordable
spectra is affordable and does it's job well. go for a spectra.