We've only had our Terraza for a couple of weeks so far, and we bought it NEW (though it is a 2005) off of the showroom floor with 51 miles on it. We have been really happy with it so far. As far as vans go, it's easy to drive and very comfortable for our family. We really enjoy the extras that came with it. DVD system, XM radio, dual climate controls, back-up assist, OnStar, security system, and the very beautiful and classy interior. It's obvious that our boys love both power side doors and the IR headphones. There is just as much (or more) leg room in the second and third row seats as there is in my parents brand new 2007 Yukon Denali and more storage space than their Yukon!
All the extras: entertainment system, XM radio, OnStar, Back-up Assist, Overhead rail bin system, cool "nose job" that makes it SUV looking with van side door ease, plenty of storage space with all three rows of seats, the ability to turn the middle row seats backward, dual climate and rear controls
Perhaps somehow better view out the back window while backing up. The seat backs (though very classy looking) are high enough that it's more difficult to see out the rear window. I'm learning to rely more on my side mirrors for most backing. Maybe more middle isle walk room or better folding seat