I had a Medela Swing pump for my first baby and honestly I wish I'd heard of the Unimom Forte first!
I have purchased a Forte# (basically the same unit, just comes with an extra pumping set for double pumping) for this bub and honestly it's one of the best purchases I've made!
The pump itself is weighty as would be expected of a hospital grade pump. Although it weighs in at about 1.2kg, I would dispute the idea that it is too heavy to move around. I've quite happily toted mine from room to room with no issues whatsoever. When I return to work I'll be taking it with me in a backpack and I honestly doubt that it will cause me any issues at all.
As for the actual workings of the pump, it's very simple. An on/off switch and a dial that increases or decreases suction. There is no let down function which the Medela boasts however I've found that starting the pump on a low setting and then increasing it slightly did the same job.
I also have found personally that using the pump on the lowest setting was more than adequate. I've only turned it up briefly twice and found that I didn't get any more flow than when it was on low so I kept it on the very low suction.
This pump is a closed system which means it can be sold on with no problems after you're done with it or loaned to friends with no concerns whatsoever. You do need to replace the pumping set (ie. bottles etc) but the tubing and pump never come into contact with your milk unlike many other more expensive pumps.
I would definitely recommend this pump to all mothers, whether first time pumpers or not. The price is excellent. $150 from Unimom as opposed to the $280 I paid for the Medela Swing... Which might I add never allowed me to pump more than 30ml at a time from BOTH sides. With the Forte I have regularly managed 140ml from both sides and in half the time as it's a double pump rather than single.
The ONLY problem that I have seen with this pump is that the Australian distributer in the Blue Hills apparently is absolutely shonky. Poor service, slow postage even with express post requests and not getting back to buyers when they've quearied something.
As a result I purchased mine from another seller on ebay who sells reconditioned Unimom pumps. They are not affliated with the distributer as far as I can tell. I only paid $99 for it (obviously as it's reconditioned) and my pump was sent the day after I ordered and payed for it. No delay whatsoever. So if you're going to buy one of these pumps I highly recommend shopping around and trying to buy it from someone other than the Blue Hills distributer.