
Originally Posted by
Egan101
You're actually comparing only 2 platforms. The Sorento/Santa Fe share the same chassis and engine while the Trailblazer/MU-X share a similar chassis but differ only in engines (Chevy and Isuzu opted to use different ones). The Sorento/Santa Fe has a unibody structure (body with suspension built on it) while the Trailblazer/MU-X has a ladder-frame structure (frame with body built on top, just like the Fortuner/Montero Sport/Everest). The unibody structure offers a better ride and mostly similar to big sedans. The ladder-frame structure offers better ruggedness in off-road conditions like any pick-up-based SUV. All of these come with CRDi engines so expect diesel efficiency. The Trailblazer's 2.8L engine offers the most output (200hp) but the Korean twin's 2.2L R-eVGT engine offers newer technology and is quite potent (197hp) for its size. The Koreans are priced higher though, more than 2M for their TOTL models.
Since you're considering the Trailblazer/MU-X, you might as well check out the Montero Sport, or the new Everest, or wait a bit for the new Fortuner. If you opt for petrol-powered midsize SUV's, your options are the Mazda CX-9, Honda Pilot, Mitsubishi Pajero, and Ford Explorer.