Router choice

[BENORMOUS]

So my office has been stuck on adsl 3 down .6 up for i dont know how long now and ive finally had fibre installed to the building,i originally thought it would be like fttc but its not its fibre to the building with ethernet ports all over the walls,i need a router thats gonna be reliable enough but at the same time not expensive,so i assume its gonna be rj45 straight from the wall to rj45 port on the router,any suggestions or links you can hook me up on because im not so familiar with them,company in charge of the estate fibre is ask4