Shopping for Prius C 3 or 4 - Few Questions

I am looking at the Prius c 3 or 4 with the moonroof and 15 inch alloy wheels.

At first I was set on the 4 but as far as I can tell there isn't much difference between the 3 and 4 besides the softex seats with heated seats and the heated side view mirrors. Is that right?

I am doing most of my shopping online to get the best deal possible. I am willing to travel to get a better discount. I am also looking at 2012s because I figure the dealers would be more willing to discount those since the 2013s are out.

Is there any reason to get a 2013 over the 2012?

The online descriptions are not always accurate. And I don't want to travel somewhere just to find that the car isn't as described. Can anyone with the 3 or 4 tell me if these options are installed?
- lighted vanity mirrors
- light above back seats
- pocket behind the driver seat (I've seen this personally in 3 different prius c 4s - there is a pocket behind the passenger seat but the driver seat is sealed)
- fold down armrest between the back seat with cup holders


Thanks!