I don't know if you've completely made your decision yet, but I'll offer my two cents on the Aztek - having seen enough of them go through my shop.
First, the bad:
I find them to be very underbuilt. Rear shocks have been seen to leak as early as 15,000 miles. Has that stupid 60-degree V6 with the lower intake manifold gasket that likes to leak, seen to fail as early as 30,000 miles.
Let's talk about that engine bay - replacing a battery is easily a half-hour's work, *with* proper(air) tools. As I recall, the job requires a 13mm socket, an 11mm socket, a 10mm socket, and an 8mm ratcheting wrench, and you have to move all kinds of electrical wiring and a big junction box aside, plus lift the heavy battery straight up and out. And that's a "routine" repair. For comparison, I need a 10mm socket to replace the battery in any of my Toyotas or my wife's Miata.
Now, the good:
I thoroughly enjoyed test-driving a few customers' Azteks. They are quite comfortable, roomy and all that. Drove nicely enough, more like a minivan than anything else. Fairly quiet inside.