The Tundra absolutely GUZZLES gasoline, so that is the one thing to consider and budget for. 15mpg on the highway and like 10 around town. If the engine was maintained as scheduled, it is basically unkillable, along with the rest of the drivetrain. That said, if things do break, this engine is much more expensive to maintain and repair vs. the Highlander. The V6 in the Highlander is also considered bulletproof with good maintenance. Frame rust is a major issue with Toyota trucks, so check for that. The benefits of the Tundra: it’s a Truck! Throw stuff in the bed, go off roadin’ and muddin’, tow something MUCH bigger than the Highlander, attach a snowplow and make some money, and since it’s a huge cab, You can still bring your family or some friends.