[ranchwest]

If you have any past performances, you can practice selecting pace lines. I don't have RDSS, but I have learned enough here to be able to converse on the topic of pace line selection and to sometimes recognize when I have not made the best selection.

The E/L difference is completely dependent on which pace line is selected. I don't think there is specifically a right or wrong, but certainly some lines are more right or more wrong than others. So, you may be getting these suggestions from someone who has made an excellent pace line selection or you could be getting suggestions from someone who has selected a line that you would have never deemed advisable.

So, my suggestion is that you are putting the cart before the horse, pardon the pun. I suggest learning pace line selection first. Then, when you get RDSS, you will be able to get to the line that will be the one you have confidence in for the E/L difference. Of course, RDSS will help you greatly in selecting a line, but from what I hear most of the experts here sometimes switch away from the Perceptor line of RDSS based on other information they glean from RDSS.

Brisnet has a limited number of free past performances in PDF format. Since you won't be making actual wagers, you don't need to be concerned about which track is the free offering.