I've had this high chair for about a year and a half now. When we bought it I was convinced it was the right one, despite the hefty price tag (£120 at the time in Mothercare). A year and a half on my wife thinks it was the right high chair, but I'm not so sure. Firstly the creases in the seat are very deep so it is hard to clean and the plastic clips (which get peppered with food) have lots of grooves in which you all but have to clean with a cotton bud once a week to get the c**p out otherwise with some foods it'll start to smell. So from a servicing perspective it can be a bit of a pain to be honest.
The other thing that gets me with this high chair is it has a lot of unnecessary stuff on it - you never use the net basket underneath the chair, you never use the side stand to put drinks on (they'll just get knocked off) the retractable arms on the sides of the chair (akin to arm rests on a Range Rover) are there for no good reason - it's just stuff that makes the chair heavier, more difficult to clean and more likely to go wrong.
The build quality is generally very good although the seat on ours broke at 6 months - we had it replaced by Mothercare straight away and the new one has been fine, so I don't think it was a defect of any kind (more the wife not collapsing it correctly I suspect).
I never really thought about any of this until we went to the in-laws who had bought a £30 job to keep and theirs - lightweight, easy to clean, etc. And I just though "all we needed was a seat with straps, why did we feel the need to spend all that money on the Chicco?" And that, ladies and gents, is my problem.