I have the Nano trolley, it's a lot easier to get in and out of the van than it's predecessor, they have saved a bit of weight by making the base for the barrel a lot smaller so the barrel is a really snug fit, so you have to be carefull where you source barrels from. The only niggle I have with it is that there is a slight delay from when I pull on the uni-valve until the pump delivers the water. Other than that it's a really good robust, light trolley. I use a 16 litre backpack carried by the handle for any areas not suitable for the trolley.