I used to use Maximuscle Promax a lot when I was working/training/living in the gym – tasted good, mixed easily just by shaking it up with water. But I was the best part of 2 stone bigger in those days.
TBH, I will still have "something" after a longer or harder ride to try and help recovery. I have found it doesn't seem to matter whether I use a proprietary recovery drink, For Goodness Shakes or simple Frijj milkshake, I am less sore the next day than if I just have a tea and cake or beer and crisps. Not very scientific research though.