I don't like flimsy bookcases. Flimsy to me means built out of veneered particle board, probably self-assembled. I need something built out of either solid hardwood (no pine) or an engineered wood (plywood) with a good veneer, or metal. I prefer bookcases that DO NOT come with adjustable shelves -- these weaken the structure of the bookcase, compared to bookcases with fixed shelves. Also, I don't like the look of the holes needed for the adjustable shelves.
Something like the Ycami Achille (pic above) looks great; but that's not available in the US.
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