Any published 'turbulence speed' is a compromise between adquate control margins and excessive airframe strain. IF you fly NG, you can look at the 'gap' on the AI between your buffet boundary markers and check that you are in the middle. That will give you a good margin. At lower altitudes (below 20) and also at light weights, there is no harm in reducing to 250 kts say to improve comfort and maintain manoeuvre margin.
I would caution a little on what IRR has said, and if you see the speed shifting significantly out of the comfort zone it is indeed a good idea to 'chase it'.
as Boeing say.