i use philips avent duo electric. i've also used the medela symphony (hospital use for jaundice, and subsequent rental). i like my philips one, it took me a while to get used to, i didn't know you could adjust the pressure with the squeeze handle, and was going at 100% so i was in a lot of pain. after i learned how to use it correctly, it's a breeze.
i looked up the cost of the symphony, and it was a couple grand. i don't understand the hype. i feel like my philips does more than it does, and i get plenty of milk in short amounts of time.