Your comments

shaun, the modem is ordered. Thank so much for your time providing explanations

Seth, thank you for your reply, it sounds like if I wish to continue to use their modem (with the wireless diabled) I should get the R6 and retire my Nighthawk.  If that is correct, Ill be ordering it and shielded ethernet wires (and grounds) this weekend, thanks for letting me know, I will look for your further thoughts. Jeff