Phil and Teds for toddler and baby???????

We are looking into the PnTs. Can i ask you opinion. Or anyones who has a PnT. I love the sport but thinik maybe the extra seat when ontop isnt so sturdy but so cannot afford the vibe. Even on ebay they are going for nearly 400 quid! and 2nd hand. If i was to pay then i want it new c/w warrenty. I was just wonderfing who has the sport and what do you think about it? Like i say olly will be just shy of 2 years old when baby is born but he is quite a big boy. Not stupidly big but big (i am 6ft so it figures lol) Anyway do you think they are sturdy enough?

Hope your all doing rly well
Jenn
DIJuly
17+3