With the addition of the 5.3-liter, 325-horsepower V8 extended cab (EXT), eight Chevrolet Trailblazer models are on the road in 2005. And as the largest and most powerful Blazer available, the new EXT has plenty to offer.

It's comfortable and provides a confident drive. It offers vast cargo space, has an attractive two-tone interior, a well-designed console and boasts of plenty of impressive option packages.

But sometimes subtle qualities or subtle deficiencies are more impressive or problematic than a vehicle's overt characteristics.

So it is with the new Blazer. While recently showing the car to several friends, one sat in the second row of seats. Surprisingly, his head easily hit the roof. My friend is 6-foot-3, and while that's tall, he's not a giant by any stretch.

"I've got a Scion and there's plenty of rear seat headroom," my friend commented.

The quick analysis made a good point. As the largest and most powerful Blazer available, shouldn't a 6-foot-3 person sit comfortably in the middle of the car's three rows?

Conversely, an SUV hardly seems like a vehicle for a remarkable sound system. But the Bose premium sound system available in the Blazer's Sun, Sound and Entertainment Package is superior. The combination AM/FM stereo, six-disc changer, XM satellite radio and eight speakers are arguably the finest music package I've experienced in any test car in the past two years.

Beyond a curious space limitation and a wondrous sound system options, the Blazer offers an odd mixture. It's a well-designed SUV with plenty of space for family and cargo. It has adequate steering and handling, and it offers a quiet ride considering its status as a large SUV with 17-inch tires.

Yet, the Blazer falls short in other key areas.

The vehicle's braking system seems uneven - fine in some circumstances, soft in other scenarios with far-too-long response time. The Blazer maneuvers well in traffic and its turning radius is surprisingly tight and efficient. But again, for each vehicle strength there's a weakness. The Blazer's fuel rating of 14 mpg (city) and 19 (hwy) is hardly impressive.

Standard features are adequate: power mirrors, heated daytime running lamps, remote keyless entry, tinted rear glass, 65/35 second and third-row folding seats and a rear window defogger, among other standard items.

Three options packages, the aforementioned Sun, Sound and Entertainment, as well as the Luxury and V8 Power Play packages, can add nearly $7,000 to the base sticker, pushing the total price to more than $41,000.

Some options are worthwhile, including the OnStar Emergency System (with one year of free service) and leather-appointed seats. Other options