I'm a XiTone user, and love my 1x12 wedge. I've had both the passive and active (powered) versions of this wedge. If you are going to use the Matrix amp with a XiTone cab, you'll have fantastic results. One of the optional features that Mick (XiTone owner) offers is a switch that disables the FRFR circuitry, essentially turning the full-range wedge into a regular 1x12 guitar cabinet. That's super handy in case you want to use it with a traditional amp head, but also have the option of using your Matrix and driving the wedge as a FRFR monitor. Best of both worlds.
The wedge shape of the XiTone 1x12 makes it ideal for "monitor" placement onstage, but it also sounds great standing on end in a "cabinet" position. On some stages, I place the XiTone on end, atop its flight case. That puts it about in the right position for a backline amp cab. On larger stages, I always put the XiTone right in front of me as my monitor.
I've used my XiTone wedges on all kinds of stages as a touring musician, and they've been fantastic. I've also heard great things about the CLR and the Matrix FR212. I went with XiTone based on reviews, price point, and the great customer service I've gotten from Mick. FYI: I'm just regular customer, and don't get a discount or anything for the recommendation.