Bought this one after an Amazon review said it was the most robust. And they were right. It is made of a strong, tough material and the poles are strong too. Looks like it will take plenty of abuse.
I really like this, when it was delivered I found the instructions quite easy to follow so we had it up quite quickly. The poles make it very sturdy and it can fit my 4 year old and my 5 year old at the same time, so it's a good size.