I'll start! I have a medela swing. It seemed to be the best rated on every site I read.
It's electric, easy to use, easy to clean. It's not a closed system, so you're not advised to share it. I think you can buy replacement bits.
They're around £100. Sometimes there's a deal on.
I love it.
Have a good think about what you want it for though - is it for exclusively expressing? Then you'd need a double pump. Do you just want to be able to express off the excess when you're engorged? You might be better with a hand pump.
Some women just cannot get any milk out with a pump, regardless of how plentiful their supply is. I knew I could pump as I have done with previous babies. Not sure if I'd have been happy spending £100 on a pump not knowing if I'd be able to use it.