Preference is an emotional response
Feeling is not (in most cases) - thinking
http://onlinelibrary.wiley.com/doi/1...491.x/abstract
Abstract
... The present study investigated the effect of using a text format that might be predicted to disrupt reading. In this study 56 individuals were presented with reading material presented in right-justified format and in‘ragged’uneven line format.
Subjects performed significantly worse on right-justified material.
Subjects who were classified as good readers on the basis of a pretest were more affected than poor readers.
...
What is "best" depends on your aim
- to "feel" well
or
read well