I love my Kangaroo Joey pump! It has so many features and even though it is slightly larger than the Infinity pump I still find it to be perfectly mobile in a backpack. I have yet to use the feed flush bags with it (I'm able to drink water orally) but it has not gotten clogged yet. It has the "keep tube open" feature which has worked well for me so far! I just put a bit of water at the end of the feed and run that to flush. A great purchase!