...For example, Colt is the "hallowed" manufacturer, but objective scrutiny would say that Colt isn't really anything special at this point. They get the free ride for their history.
BCM enjoys a great reputation, but it is because they made a quality product at a much lower cost than the Colt. They are still riding high on this reputation for quality and are now canonized as the go to internet brand. Their prices have gone up now and other companies are producing just as good or better, but don't get the love because of the slowness of the gc to adopt the new. Daniel Defense and Spikes Tactical are clear examples of this.
Daniel Defense puts out the highest overall quality AR I have seen with amazing attention to fit and finish. It comes in at around nearly the same price or just a touch above BCM, but it doesn't get the same respect BCM does. Did I mention the gc is ssslllloooowww to embrace?
Spikes Tactical is in the same boat, but in a different way. Spikes has figured out BCM's old business model...how to create an equal quality product as BCM at a lower price. Despite this additional value and the most comprehensive listing of certifications I have ever seen released to the public, they are always mentioned as "nearly" the quality of BCM. I have yet to hear anyone who owns and runs both brands to rank them as anything less than equals. Slowness to adopt and stubborn brand loyalty to BCM are the only "nearly" BCM quality that Spikes is missing.
The other rifles are being neglected because of an inability to conceive of an AR not intended for some post apocalyptic scenario, regardless of how they perform. Bushmaster, DPMS, and Rock River are in this group. They are good enough to be issue weapons for LE, and if you are looking for precision or varmint weapons, they are perhaps at the top of the list. They are more than sufficient for gaming and normal usage.
Volk, I feel that you're actually wrong in one respect. Perhaps it is just this site, but on the "big" AR site, and in shooting circles, DD is held in just as high a regard as BCM, Colt, LMT, etc. Shoot, if Smartgunner had been running that deal that they have now a couple of months ago, I'd have a DD instead of a BCM, and I'd be just as happy.
Most talk I see of Spikes is for their lowers, but they do as well put out a great product. I'd have to say though, in my limited experience, I don't think that BCM has raised their prices. Of course, I could have just missed the increase. Still a great product for the price, though.
Here is the reasoning that went behind my purchasing a BCM carbine. I was going to spend the money to get a top notch carbine, and accessorize it to meet my needs. I don't have the desire to have half a dozen or more carbines, so one has to do what many can do. I wanted to buy the best; I looked at a Colt 6920, but I already knew that I would be putting a long free float rail on it. So, I already knew that I was going to have to change, or cut down, the FSB, buy the rail, install it, and go through all of the rigamarow.
But wait. BCM has the same unbeatable quality and stringent testing of materials that Colt has. They also offer many different configurations. It turned out that I could get an upper receiver built just the way I wanted it, and the complete rifle would come in at a price lower than what a Colt would cost me; not to mention the cost of changing it to match my needs.
Daniel Defense and Smartgunner do this as well. Personally, I see BCM and Smartgunner as the dealers of the future. You can start with the base model, and taylor your build to just what you want. This way you don't have to buy a standard carbine or rifle, and do all of the work and increase your costs. This is a great way to go when you know that your going to have a rig that is far from standard. "Oh, and not only will we build it for you to your specifications, we'll do it for what a "recreation" rifle will cost you!" Hard to beat that, isn't it?
I've laid out the above so that folks who are less familiar, but want to buy, an AR platform can see that there are a great deal of options out there. Sorry that I went so long.