Advice on purchasing an older Kettler

[SweetTooth]

I was thinking of getting an Air Navigator, but I now have an opportunity to purchase an Air Jumbo (about 3 years old) in excellent condition for $100. Comes with pushbar, seatbelt & dump bucket. I've read most of the many(!) posts regarding Kettlers & I understand that the differences are the Air Jumbo does not have rear swivel wheels & has a hand brake. DS is 18 months old, so I will be pushing him for a while. Are the rear swivel wheels worth the extra $100? Does anyone know if the Air Jumbo seat bigger? Also, I read a negative review on the Air Jumbo because the steering & pedals require a lot of force. Anyone have thoughts on this?
TIA for your input!

[bluestar2]

We have the Air Jumbo and it does have the bigger seat, which I have heard may fit a younger child better. It worked well for us and DC has had it since they turned one (we have been using the pushbar since they are just able to reach the pedals now). Since they aren't pedaling by themselves yet, I can't say how hard it will be for them to do it but I have ridden around on it myself and it seems to be fine (for me anyhow ;) ). I think it would be fine for them as well, in time. Personally, I wouldn't pay $100 for rear swivel wheels and would be hesitant to buy a used one off ebay for that much.

[SweetTooth]

Thank you for your input. It's a used Air Jumbo off CL, so I'd see it first. The extra $100 would be if we bought a new Air Navigator. There has been so many rave reviews for the Air Jumbo, I think we'll get it....
Thanks again!