What cables are you using for a hidden in wall clean look? I have B&W 802 D3s coming.

Just wondering what cables you guys are using for installing them in walls? Gauge, brands, ends, etc. etc.  Are you guys terminating them yourselves? Banana plugs or spades? 

I have a krell chorus 7200 and three 802 D3s coming in a couple of weeks.  I am looking to combine two channels per speaker.  

All of my other speakers are the older B&W SCMS speakers running from a marantz amp for surrounds. 

Thanks for the help guys.