I am getting the Ameda pump from this website www.breastpumpsdirect.com, and there are reviews on the pump there. Seems like its not so quiet... but the reviews are good otherwise.
It is known as Ameda Purely Yours in USA, but I'm not sure what it is called in Singapore. I came across a website selling it locally for $300plus, but I couldn't retrieve the site.
Sorry I can't provide any personal reviews yet!