Have been experiencing problems with our internet. Pay for 600 Mbps, get 720ish off of an Ethernet cable and only 40ish wirelessly. Latest tech swears it's the router we rent from our isp, and recommended the Netgear Nighthawk. We figured we'd take the plunge, especially since equipment rental fees just went up for us from $10 a month to $14. So, researched them, debated, then debit card...