We do not report the SB instead, in fact you should report the U-SB and if you wish you can report the SB as well. Each one gives different information and is calculated in different ways. One cannot replace the other.
To get a standardized effect of continuous explanatory variables, so they can be directly compared. Their units are then the same. I recommend the following book: http://www.statmodel.com/Mplus_Book.shtml