Playmobil gets played with more than Lego in our house (DC aged 8 and 4).
I do wonder if that is because we have more Playmobil, so they can make more of a mess set up more interesting scenarios.
Our absolutely most popular piece of Playmobil is the school bus, which has been played with pretty much daily ever since we got it.
We also have the pony stable, and lots of horses and ponies, and they get played with loads by DD2, who is really into horses, and the Noah's Ark, which is played with a lot, but mainly the animals themselves just on the floor rather than the boat. I am planning to get DD2 yet more Playmobil for Christmas, but haven't yet decided what to get - more animal stuff or something completely different.
DD1 prefers people, cars, animals and little fiddly accessories like food etc. She usually plays with Playmobil in conjunction with her dolls house. I think she would really like a hospital or school set, but I am a bit wary of the big buildings, I think they are expensive for what they are, and actually DD would find it easier to play with the contents of the rooms set out on the floor.
We have the swimming pool, which gets played with filled with water in the summer, in the garden, but not that much the rest of the time, although the characters in swimwear get played with in the bath a lot.