i have the medela mini too. I had one that was leant to me, but the motor what shagged. I didn't realise till I when kaput and I got a new one, expressing is much easier now. I bought mine new because I didnt want another worn out one off ebay, and also I am only expressing for one feed a day (not going back to work) and not always having to express because sometimes I collect enough from the breast shells, so the mini does for me. If I was expressing more, I might get a more expensive model.