Just purchased a 2010 Toyota Tundra Grade 4dr Double Cab SB (4.6L 8cyl 6A). Although I have not had occasion to tow yet, the 4.6 seems to have all the power I need and accelerates well. The double cab and increased overall length will take some getting used to. Had I been able to get a diesel, I believe this would have been the ideal truck. I wanted a diesel primarily for long-term efficiency (mpg), dependability and low-end torque (off-roading and hauling). It represents a very good value IMHO and rides like a dream. I traded a Toyota FJ cruiser in on it and am so much happier with this vehicle than the FJ. The FJ is "toy-like" by comparison.