Yep, it is neat. My stroller obsessed friend (lady who had the triplets) says they seemed pretty fantastic when she saw one. We have a Maxi Cosi Mico (infant seat). I do like my Mico. I'd love to see a Pria in person sometime. It seems like a great solution for those that don't ever take infant seats out of the car (so those that BW or use stroller basinet seats).
Yes, that's exactly why I like it. We did the convertible/BW thing and while Addy was okay in her Priori right from the start, a really great insert made for the seat like that would definitely have been even better! Also I think the Priori only goes to 65 pounds, which is great, but 70 is even better!
That looks like a great seat. We have the Britax Marathon. So far I love it.
I do love my MA70! I was actually pulling the cover off of the infant seat yesterday to go ahead and wash it and remembered the one thing I HATE about that seat and LOVE about the MA70. Threading the damn straps. Though I wouldn't put a small baby in a MA70 ever though. I thought it was huge on Aiden when he started using it at about 20 lbs!