We own PBK twin over full bunkbeds. Bought them when DS2 was around 2.5, DS1 was 6.5 at the time. The bunks have held up well, my boys are not easy on anything. At first the little guy slept on the bottom but a couple of years in, we switched them and DS2 is now on top and DS1 sleeps in the full on the bottom. The finish did rub some with the ladder hook... but you can't see it unless you remove the ladder (which doesn't happen often). I highly recommend them. We bought ours in a local PBK store and had them delivered and set up.... totally worth it in my opinion.