I have a Liberty (currently trying to sell it) and have baby # 3 on the way. We just purchased an 04 Dodge Durango for $6K and it is fully loaded! I got my leather heated seats, sunroof, and DVD for the kids. haha. Anyways, it may classify as the same group as Tahoe and Expedition?? I am not sure. But I love it! It has soo much more room than my Liberty. It runs smooth and love the fact that I got to keep my 4X4. I was stressing over that for some reason, haha (probably pregnancy hormones, hahaha). Oh ya.. and my gas mileage isn't any worse than my liberty was.
Good luck with your decision !