Hi,just joined I am looking for cabinets to fit my new flat and have actually decided to go for vhive wall street series for their sturdiness. But on 2nd thought, the number of shelvings are fixed and they provide much more height per shelf than normal bookshelves (around 35cm). And since they dont' allow you to get additional shelvings, it sort of seems quite fixed. Now I am thinking of Ikea ones, but like what some of you mentioned, its chipboard. I have a lot of books and would probably need around 2m length in full height. Have never used Ikea ones before, so like to ask if anyone have got their Besta or Billy series recently and how it is after testing it? Besta seems more sturdy, though materials should be the same. Actually vhive is also using chipboard, but the thickness per shelf is 25mm.