current modem is a Motorola sb4121. Router Linksys e1200.
There's 3 pc. Xbox. 2 iPads and everything is on wireless. Should I replace both modem and router or just router if modem can handle everything and what equipment should I consider. Price limit is $150 but cheaper is better. Work from home so I need something that upload/download spreadsheets and other needed files without causing issues while gaming on Xbox and streaming movies in house.
Thanks for suggestions