Yes the current generation can be better but "it ain't necessarily so" (Porgy and Bess ????)
I ran a 7 year old TP-Link until I got fibre earlier this year and it was better than the Thomson one the Plusnet supplied for me when I had a second phone line.
I would think your cheapest solution is to get a range extender. This does usually mean that you run an ethernet cable to it in the new location.
I have used this one for several months now and it works fine at under £10