As a dietitian I work with the elderly. I recommend this "generic' equivilant over the name brand all the time. The goal of these types of drinks is to help drink/consume nutrition when your appetite is not good. When I am on the go I also use this as a quick shelf-stable snack to not let me get "h-angry"!
These are comparable with Boost. I have a busy life with a lot of travel, so eating regularly doesn't always happen for me. I like the taste of these and I feel they give me the vitamins and protein I need.