I'm new to the forum but it might be helpful to share my thoughts. I just went through the same decision process and this is what I ended up doing.....bought a used 2012 Tundra with 60,000 miles and then a new Prius too. I drive 32,000+ miles per year for work and the gas savings alone (over $6,000 per year) pretty much pays for the Tundra. Just something to consider.....
As for Tundra, extremely pleased so far with the towing capability. I just towed my boat (admit it's light, 2,500 or so pounds) this weekend on a 100 mile trip both ways and it towed like a champ. Gas mileage sucked but worth it for the towing ability in this case.