My brother has a Trailblazer, 3 kids, and it appears to be a piece of crap. It's been in and out of the shop a lot of times. My coworker has a Trailblazer that's a piece of crap, too. Stay away.
My brother's first vehicle when he found out baby number two was actually babies number two and three was a Dodge Caravan EXT Sport. It's good in snow, you can get it with AWD I believe, and it's still going strong 7 years later.
Good luck, Daddio!