Help! Need assistance with choosing the right Prius!

Help! I am currently in immediate need of a new vehicle and have decided that a Prius is the route I am taking!

I am unsure if I should buy a used 2nd gen (06-09) or get a newer 3rd gen?

I feel like if I can qualify for Toyota's 0% APR going with a 2013 or 2014 might be the best option since I will be able to hopefully drive the car for many many years?

On the other hand, I have located a used 06 Prius with about 150k listed around $6200. The seller informed me the battery was recently replaced at 145k miles... seems like that is a now a "new" used car.

Please help with any information, tips, or suggestions!

Thanks