I've used my SX SPB 62 pretty hard for the past year and a half. Used on more gigs than I can remember. The neck has been very stable. Had an issue with the fingerboard shrinking a little bit, loosening a few frets, other than that, it's been rock solid. This has more to do with NewEngland winters, than anything to do with the bass. My Luthier didn't seem to supprised, as he's had lots of instruments , from high end to low, with the same issues around here. I love that bass to pieces!! I like my action real low, and check the truss rod adjustment fairly frequently. Rarely do I ever have to tweak it, and if I do, it's the smallest of adjustment. Maybe twice a year it needs the smallest of tweaks. Once agian, this is New England, so this is just stardard stuff with our climate.