Thanks for the advice. For info I went for the
Netgear N600 Dual Band. Decided I might aswell as it looks like my 100MB connection will go to 200MB soon plus Netgear has always been fine for me in the past.
It's increased my wired speed to 109MB on my main pc and wireless to 93MB on my laptop. Haven't got anything above 50MB on my Moto G phone so suspect thats its limit. Turns out I do have one 5g device after all - my work laptop - not that I was ever bothered about speed on that !