Each to their own as the saying goes but I always view WiFi extenders as a last resort, they rarely if ever deliver on what they promise. Though there is an element of simplicity....
The best option, if you need a larger area of coverage is Access Points WIRED back to the central Switch/Hub/Router. There's then a decision whether to give them individual names or share the same SSID (name); I usually opt for different names.
Failing that use "Homeplugs" to achieve the same thing, using the ring main wiring as a substitute for dedicated ethernet cable.
Note that LAN wiring doesn't need, in a domestic environment, to be thick unbending Cat6 cable. Standard thin and flexible 4-core phone cable, correctly wired, is fine for up to 100mbps in anything other than a huge mansion! In fact if you look carefully at some shorter LAN cables supplied with routers you could easily see that it is only 4-core cable wired into the 8-contact RJ-45 plugs.
As an example I have a phone cable running unobtrusively around skirting boards and architraves from my router by the front door to a TV Digibox at the back of the house, total length about 25-30 metres via a very indirect route. It runs happily at 100mbps. I also have a WiFi access point at another rear location that serves the patio/garden area, linked over the mains, despite complications of having split ring mains due to a house extension.
