Update: My figures arrived yesterday, April 27, a week ahead of schedule and exactly 15 days after I first emailed Wei. They were well packaged and arrived in perfect condition. Packaging is simple, but high-quality. He even tossed in a bag of extra accessories.
There are plenty of pics and reviews out there, and I'm among the least qualified to make a proper review. Suffice to say, I'm "LASER BLAST" in love with these things. I haven't seen everything out there, just Hasbro, Marauders, Boss Fight, and JoyToy, but these are the best of the bunch, by my estimation. Okay, I'll say a little more:
Proportions, materials, and function are spot on. See the photo below of the PGV along side a JoyToy figure.
I like both, but I feel like the comparison really calls attention to how wonky the proportions of the JT figure are. Also, there's something about the materials and paint of the JT figures that feels fragile to me, like something's going to snap or chip. (To be clear, this is just perception, as I've yet to break a JT figure or have any paint chip off.) On the other hand, the PGV feels as solid and play-withable as any ME GI Joe.
Also impressive is the posability. Joints move freely, but hold their position. The figures are very well balanced with feet that provide stable footing in most any reasonable position.
If I have a complaint--and it's mostly a matter of aesthetic taste--the printed facial features are very soft in the way that digitally printed faces often are (see also, the "Photo Real" Black Series figures). It works in its own way, but it almost feels... out of focus?
By way of comparison, here's the PGV head versus a head painted by Spartan118:
The PGV head could be argued to be more "realistic," but I personally prefer the sharp lines and bold colors of the Spartan118 head.
That's all for now. Overall, a very smooth and easy transaction and, for me at least, worth the premium price (though I won't be straining my credit card to buy any more in the near future).