Update: Took the Base Camp 6 out for a night of camping with the family. Great tent. Roomy, easy to set up, decent ventilation even with the full fly since you could open up both door windows and roll up the vestibule openings to get some cross ventilation. We put the fly on since there was a 50% chance of scattered showers. Of course, it never rained a drop. The tent poles are heavy duty aluminum, and the stakes are the heavy duty versions. No need to buy/use alternate stakes on this one.
The one I got, however, had faded brown marks all over the light green doors. At first, I thought it was mud and that I'd gotten a used tent. But after another look, it appeared dye from the brown section had somehow rubbed off on the light green? Odd though that it was only on the doors and nowhere else on the green portions. Maybe just a factory mishap. Purely cosmetic, but I took it back today, and REI gladly swapped it out for a new one.
Functionally, I couldn't have been happier with the tent.