My live mixer for the past 17 months or so is the Behringer XR18 (1st one sold in Canada, I believe). It's an amazing piece of kit and has transformed my setup and the way I do sound.

The best way to connect your 11R to FoH is a personal choice. Most of the time I used mine direct to the console and just put the signal into whatever monitor I was using. On occasion, when there's a drummer nearby, I run my sound into my Tech 21 Power Engine 60, monitor with that, and then take the XLR out from the Tech 21 direct to the console for FoH. At one gig I ran into both my Tech 21 and my Seymour Duncan 84-40, and again used the Power Engine output direct to FoH.

There are any number of ways to do it... it's a matter of preference, or whatever works best for your setup, I suppose.