I had a F150 with a V6, and the transmission was always shifting. I hated that so much I sold it. The transmission searching is a big reason I opted for a 4.0 4Runner instead of a 3.5 Tacoma. I am thinking about a used truck, and I will look at the older 4.0 Tacomas if I get one. Might get a Tundra also, just depends.