Cheap reliable router for ADSL and Fibre

Are there any cheapish reliable routers than can be used on ADSL and fibre?

Got some issues with new Netgear DGND3700 router/modem so might decide to return it and replace with something else.

It needs to work with my existing be* ADSL service (so I can test it works) and will also need to work with the BT Openreach provided fibre FTTC service.

Doesn't have to be a combined router/modem, just a router.

Thanks all.