I've got a 2004 Tacoma 4x4 with the 3.4 engine. In the past I've used conventional: Kendall, Shell, Havoline, Pennzoil, Chevron, Mobil, Castrol, Citgo and Quaker State (whatever I could find on sale). For the last 30,000+ miles it has been 5w-30 Mobil 1 or 5w-30 QSUD. The truck gets slightly better gas mileage with the synthetic oil during the winter months and turns over easier (it has been hovering from 3 degrees up to 30 degrees here for several weeks). During the summer, it gets the same gas mileage no matter what oil I've used. The Quaker State Synthetic does quiet down the engine versus Mobil-1. Engine does not burn oil and I go with 4,000-5,000 mile oil changes. I would say go with any of the Synthetic's you noted. These Toyota engines seem to hold up pretty well when properly maintained and not beat on.