Without reading ANY of the replies here and ONLY responding to the thread title;
Here in the US, we are limited to just how many tables are available. Table selection is a concept that worked well before BF, when there were enough
tables available to make informed decisions. After BF, our (US) options were remarkably reduced.
If you can apply tables selection, then definitely, do. It might help, More likely IMHO is that you might be missing reasonable opportunities waiting for some mythical optimum opportunity.
Better to concentrate on the other areas of your game.