I bought this for my 76 year old mother to use in her garden hoping that the weight of it wouldn't be a problem for her, and thankfully, it isn't. She thought it might be a bit heavy when she first picked it up, but in use, it doesn't bother her at all. It's also easy for her to manage the various controls in spite of having arthritis in both hands.
As for using it, she loves the variety of sprays and finds the flow control especially useful; she can go from watering big plants in borders, to hanging baskets, to small delicate plants with perfect ease. She also reckons it is far less wasteful of water too as she can be much more accurate with the water application than with previous spray guns she's owned.