Hello

Hoping that someone with experience of these products can help me out. 
 

I have a M9 mesh, which is working well but I have a couple of areas where I need coverage enhancing as it is struggling. 
 

I am happy to buy M9's if needed as I know that will sort the problem but they are expensive and the M3w's are a lot cheaper. 
 

What I really need to know is what is the advantage of the M9's if the M3w's also create the mesh and enhance it. 
 

Is there a real advantage of one over the other, and does anyone have a real life experience of the M3's performance etc that would be willing to share. 
 

Thanks in advance