I currently have a Netgear N600 WNDR3400v2 router for my home Wifi. It works great for my laptop, living room TV printer etc. I have one problem with a TV and Roku that are somewhat further away from that router and on the other side of a stone wall(approx 28' from the router). Most of the time it runs ok but occasionally I have problems and it ends up "loading". I'm guessing I need a more powerful router with more range. I'm not into gaming or anything, just TV watching. Any recommendations on particular routers with more range or what to look for in a new router that would indicate greater range than what I have.Thanks in advance.