Hi - I have this breast pump and find its great, easy to use and easy to clean and sterilise (i also bought the avent microwave steriliser and all the parts go in there)
If you are BF and want to express to build up a supply for the odd feed (or so your partner can do the 3am feed!) then I think you're only meant to express for about 10 mins, so I don't find that too hard or tiring on my arms.

Good luck with it all!