Love my AWS pack, wish it hadn't taken me so long to get one:
As far as I understand, when Eagle briefly discontinued the Beavertail Assault Pack (BTAP), users who wanted more brought them to AWS and had them reproduce them, making them essentially a "clone" of the BTAP (a version of the Yote). The Ronin DA pack is basically the AWS Yote with *maybe* a couple tweaks, I haven't frankly looked close enough to even determine, but I certainly wouldn't pay the premium over the AWS.
One thing worth considering is that the Yote/BTAP is not a huge pack, especially if you're putting a hydration bladder in there, and IIRC, the First Spear ECP is even smaller in terms of storage space. I also carry my NODs as well as some other items in the AWS pack, but instead of a Pelican case, which will take up a lot of storage volume, I simply wrap my NODs in a "silky" base layer top. This way they take up far less space, and it's a lot easier to shove the silky base layer back in the pack than a Pelican case once the NODs do come out. Also--I have a spare silky layer for when I get cold.
The helmet beavertail is great for carrying the helmet for travel, but it's also great for storing a variety of other items depending on what is needed, including radios, spare ammunition, cartons of cigarettes..., etc. I really only ever put my helmet in there when I'm traveling, but the beavertail still gets a lot of use.
The only "complaint" I have about the AWS pack is the lack of built-in side pockets, which I added using regular pouches. That being said, for the price, the "slicked down" AWS pack more than makes up for it, and is also more "modular," because you can use whatever type of pouch (if any) you need on the sides, rather than being stuck with a single pouch size/type.
The T3 Hans also looks like a great option, though I've never used one personally--basically the same as all the others, just with a little bit more storage. That being said, the small size isn't necessarily a bad thing, as it prevents you from trying to overload the small pack and carry more than the bare essentials, so there's that. As you can see from my photograph, the pack hasn't negated the need for a larger pack/ruck, but it makes a great "grab and go" pack.
~Augee