In most cases either would work fine unless you have some unusual layout and conditions. Buy from a company with a good return policy and try one out. If it does not work for you, return it.

Hi,

 

EAP225 is an indoor access point, the wifi range is about 15-20 meters. 

 

For the Deco M5, it can build a mesh network with more than 2 units. For the wifi coverage area, you can refer to the info below: 

https://www.tp-link.com/en/home-networking/deco/deco-m5/ 

 

While please notice that the actual performance depends on the actual network environment.

 

May it help and have a nice day. 

 

SRC wrote

Please advise which is better EAP225 V3 or Deco M5 home