I've used them for a good few years now - the XL in winter, the regular in Summer. Before that I used the surplus goretex jobbie, and the Hunka is a considerable improvement in terms of weight and pack size. The integrated mesh bag makes packing it up very quick and easy too.
The military ones have heavier material, softer to the touch. so they're nicer in that way, and probably more wear-resistant. But after a few years, I can see no appreciable wear on them. I generally use them under a tarp, so they seldom deal with direct rain. But I have also used them occasionally in a micro-tarp set up - only the head covered - and they coped with light rain just fine.
I've had two surplus bags, and the tape started to come away on the seams on both. I think it's just down to the fact that surplus ones usually have a fair bit of age on them even if unissued. The Hunkas are both perfect.
So based on a good deal of use, I recommend them. I've no criticism of them really,