It really depends on the airplane you fly and it's characteristics. The larger the plane, the more difference it can make due to it's larger CG range. On some planes it is more forward and thus trimming a bit back can help, like on a Lear for example. One thing to be cautious with, however, is in the case of a go-around or rejected landing. Trimming back and then having to "go missed" will have your nose coming up with very little effort, if you forget and then shove the power levers forward and pull back, you can find yourself with a very high angle of attack very quickly very close to the ground.
Now in the Boeings for example, B737 and bigger with underslung engines, this situation is aggravated even more because when you push the power levers forward for go-around thrust, due to where they are and their thrust lines, that act alone will cause the nose to rise very noticeably, and if you are light you can actually find yourself pushing forward on the control column on a go around. now trim "back" as you say and forgetting you did so, can find yourself in a very nosehigh attitude if not careful.
It really boils down to technique, just keep in mind the characteristics of your plane and where your CG is for landing. The best technique, and i dont mean to be corny here, is to really just come in stable. have your power set and speed set with a steady descent rate and you should nail it everytime.