I have the Beaba Cube. It looks good, can be converted from a regular high chair to one that sits on a chair, to a booster seat, to a chair as she gets older. It's also nice for travelling (we took it to a friends house for the weekend as they don't have any kids) and it packed up nice and small (like a cube-)
Only thing I don't like about it is that it isn't the easiest thing to clean. It needs a deep clean every few weeks where you just take some parts off of it and clean it all over (it has some cracks that food can get stuck in), but that's the only problem I've had with it!