I am thinking of bookshelves specifically, though general purpose shelf recommendations are also quite welcome. I'm thinking of easily built, low profile but spacey and affordable and reasonably reliable solutions. So far Ikea seems to be considered the very best for all of these criteria, but are there any notable competitors I should be considering? I've noticed that I don't want to go too cheap as I've seen some of the fake wood material out there that looks quite unstable. Anyway, thanks in advance for any posted advice!