We have had this high chair for almost 4 years now, and two children. Our first used it till he was almost 3, now he uses the small booster seat part, while our 15 month old uses the high chair part.. It has held up very well. Even the seat cover is in great condition. I loved that when it was time for our older one to give up the hair chair we already had a booster seat for him. plus we use the small booster part a lot while visiting family, because it's small enough to pack in the car.
The whole thing is quite big, which wasn't a big deal in our first house, but in our new, smaller house, it seems to take up so much space. It can be pain in the butt to clean, the cover is textured and needs a good scrub. Crumbs seems to get into every nook and cranny, and are hard to clean out, I actually have to use the vacuum to give it a good clean. The top tray cover was thrown away because one child figured out how to take it off and throw it, covered in food. And as someone else mentioned, both my kids have figured out how to pull the seat sides off, and shove food in it.