If youre going to talk Tacoma vs Frontier, its Tacoma all day long. The Tacoma is simply the better truck and is most likely going to be more reliable in the long run. I love Nissan but their build quality is highly suspect. I almost bought a Tacoma when I bought my Camry (didnt need the hauling capability and the MPG of the Cam put it over the top) and posted for years on a Toyota forum (Toyota Nation), so Im well aware that the Tacomas arent perfect but theyre still the best game in town. I know that they used to have some issues with the 6-speed on the X-Runner, not sure if they still do though or if its the same tranny they use in the current Tacoma.