I thinking if changing breast pump... spectra S1 or S9 or any breast pump mummies are using which is efficient and quiet?

My friend has the Ardo Calypso Double breast pump and it is really quiet. I was looking at the website and it won some award for being the quietest pump around. She also said that pumping takes a shorter time with the Ardo Calypso Double. She received it as a gift when she was living in the States but Lazada sells it for about 399SGD. http://www.lazada.sg/calypso-electric-double-plus-breastpump-474586.html http://www.ardobreastpumps.co.uk