Just saw this. I had the beta version of the Mongo 2.0's on my VAC amps for a few weeks and as Dave said we're working on some fine tuning of them. I very much liked that despite the gauge they were very easy to work with and place in my system. As far as other thoughts....Build quality - check....wide and deep soundstage - check....size, spacing and placement of images - check....tonality - nice and smooth top to bottom but this is the area we are trying to do some tweaking....I'll check back in after Dave gets them back to me and let you know results. If you're thinking about upgrading your power cords, I would recommend giving the Mongo 2.0 a listen for sure.
If you don't think cables have an impact or that they are snakeoil, I would not recommend any cables as you are pleased with whatever you have now, that said, I have no desire to debate anyone's beliefs about cables in this thread so thanks in advance for respecting our discussion here.