I have been using various routers since 3years but the only routers which created issues so frequent as connection drops and some problems is digisol router, recently the router was unable to connect to any devices and when I contacted a service center they charged me aroung 400/- . where 5year warranty is of no use.
You will be charged for services and no router will last more than 2 years if it is from digisol, Digisol routers are turning to be worst so I suggest going for another routers.