Sorry - another trampoline thread! i cannot decide but just want to order one now _ probably 10ft. Have 3 boys, 3, 6 and 9 and was veering away from traditional round one in order to try to avert constant collisions. Had been recommended an octagonal one although someone then said the 3 year old would find it harder to bounce as apparently very taut springs (?). Also recently recommended an oval one as apparently had two bouncing centres. has anyone an oval or octagonal one - three kids plus friends popping in and out. I know you're all going to tell me that whatever I buy I will have to have strict rules. I willl but I just also want to invest so as to have less likelihood of collisions!!