The Trailblazer's dull interior styling is its weakest point, but the reason why it now outsells the smaller Explorer and larger Expedition(haven't seen much new ones lately) is because of its Value for Money.
Trailblazer EXT 4X2 is P2.099M while the 4X4 version is P2.235M
It has a more fuel efficient 275hp 4.2 liter inline-6 which is more powerful than the Explorer's 210hp 4-liter V6 and Expedition's 260hp 5.4 liter V8.
The Trailblazer EXT is also one of the few SUVs in its price range that offers both good 3rd row space/legroom and cargo space behind it.
This by the way is the 2006 Trailblazer EXT with a new grill and Stabilitrak(Electronic Stability Control system).
same basic interior though...