I have a hgih chair from my first and I hate it. The pad is cloth, not plastic so it is always dirty, it is really hard to take the straps out to wash them. It is foldable, but food was always getting into the hinge and I had to use a toothpick to get it out! I am starting solids soon with my 6 month old. I went to Toys are us today and they have a lot of different booster chairs (this was in canada, so not sure if the TRU in HK will sell the same brands) There were some that change height positions, they have the dishwasher safe clip on trays over the regular tray too. Booster seats have come along way from how they used to be. I think I will buy the one I found that the entire thing can come apart and all peices can go in the dishwasher. I want one that is very easy to clean. Other nice things to get, whether it is a high cahir or booster seat, are trays that come off easily,the dishwasher safe tray on the top