I've worn the ECWCS since almost its inception. They are following the civilian market; not the other way around. You get get the same, or better, quality stuff with brand name gear. And, if you buy it through certain companies, can probably get it replaced for free in the event of failure.
The military stuff is usually built too heavily for my liking (personal preference). Even though I posess a set of gen II gear, I only keep them in my jeep, as just in case items. When I go out in winter, I prefer my gear, as its lighter, less constricting, and generally all around more comfortable. But, thats just my $0.02 worth. Others may differ here.