Between the two: Highlander, hands-down. The diesel version of the Tamaraw FX (old version) is kind of pathetic. The A/C is also so-so. The Highlander offers better fuel economy, better ride, better comfort. If you're keen on a Toyota AUV, I'd recommend that you set your sights on a Revo.

A Mitsu Adventure is also a good option, although I find it's confines a bit crampy.