My son loves this bike! At first he wasn't convinced because it was not his favorite color (red), but after riding a few times on the trails he realized how awesome this bike is. His riding has gotten so much better over the last 2 months. He is finally able to shift gears (his old bike had the revo twist shifters and he could not shift those) and climbing hills without moaning! Major win! Yesterday we took it to a new pump track and he was riding for 3.5 hours straight.
This high quality bike is an investment in your little rider, but if you are an avid biker and are taking the kid out on the trail it is a bike that can make them a much stronger rider! If you're thinking about it, take into account how much awesome riding time you'll get with your little shredder and those memories created, not how many years they can ride that size.
I absolutely would recommend buying this bike to anyone who is trying to get their kid interested in mountain biking.