I'm looking into purchasing a bass that has a single-action truss rod, which by my understanding, means that it will only turn in one direction. Specifically, it will only tighten, thereby pushing the neck away from the tension that the strings are applying. I've never owned a bass that didn't have a dual action truss rod, and I'm a little concerned that I'd miss it. I don't do a great deal of fiddling with my truss rods, but every once in a while (particularly after a string change in which I opt for different gauges), I do find the need to loosen the truss rod to add relief to the neck. What I want to know is, how big of a deal is a dual action truss rod to you folks when you're buying a bass? For those of you who own basses with single action truss rods, do you approach setting up the instrument any differently? Any information would be great... I'd like to hear other opinions to help decide if a single action truss rod is a deal-breaker for me or not.