I got a Medela Swing, bought 2nd hand from a good colleague of mine, and I have to say I hate pumping. I have not tired any others, so don't know if I'm not very successful at expressing or if the pump doesn't suit me (I have rather large breasts, I need to hold my breast and the pump). I also find the bottle leaks if it is tipped to the side, why it is not sealed a bit more really baffles me!
BUT my colleague loved it so as another of her friend. So I might just be the unlucky one.
I use Tommy Tipee bottles, my little one seem to like them or he got used to it anyway.