Oh yeah !

My comments arise from using four of the Line 6 THH-12 modeling hand-helds in question, "on the road", since the beginning of the year. (Click on the pink pic at left for details of my rig.)

I followed the link in your profile which allowed me have a look (and a listen) to your performance  in the "Kraton" clip.

Even though it was the bulletproof cabled Beta 58, you sure look after it, taking it further away for the big "ballsy" bellowing and bringing it close to enable the proximity effect to give "punchy" bass in the growls.

If only all vocalists did this !

All this expertise notwithstanding, it's my firm opinion that there's NO way you'd be happy with ANY analog wireless handheld, regardless of price. The reason is the ever-changing eq (pre-emphasis/de-emphasis), compression and expansion (companding) that they're forced to use in an effort to "squeeze" the sound through the limited analog system. It's pretty much "fighting" you all the way.

Not so with the digital data stream from the THH-12.

NO pre-mixer processing of your sound.

Nil, zero, zilch, none.

Just the sound of whatever mic model you've dialled in.

Unplug the output of the XDV receiver, replace it with a cabled version of the model you're using and you'll hardly need to change a thing at the mixing desk. An almost identical sound. The main change is that the "one size fits all" Line 6 capsule (head) can't exactly mimic the pick-up patterns of all the models.

In practice, vocalists who regularly use the 58's and Beta 58's seem happy to "work" the THH-12 version exactly as they're used to doing. In my experience so far, regular users of other models may need a short period familiarisation and adjustment. A really pleasant surprise was how happy my only condenser user (usually a Neumann KMS 105) eventually became with Line 6's "own" model.

As for distortion or overload, none at the output of the receiver. Never.

Nonetheless, a word of warning. As there's no "gain-riding" in the signal path, the XD-V's will faithfully pass whatever sudden sharp peak level (transient) that "hits" the mic's diaphragm.

Analog wireless will "round it off" in a manner that's more friendly to mixer inputs. This means that the XD-V's may reveal headroom limitations in gear "downstream", ...limitations previously masked by the "upstream" limitations of analog gear.

Yep, in the weird world of audio, two "wrongs" can occasionally seem to make a "right".

Rest assured, that sort of "right" would never be right for you and me!