All of those are great ARs to consider . Have you thought about building your own . My most recent build cost just over $1,000
and you can build a basic one for 6 to 7 hundred
. PSA has a very good product
http://palmettostatearmory.com/ .
As for the stock and sight line . I am in no way an expert but its my understanding that the stock is straight because the BCG ( bolt carrier group ) must slide in to the buffer tube ( stock ) In the normal operation of the gun . If it was bent , curved or canted in any way the bolt would not operate as designed . The by product of this design is less muzzle rise .
I to live in C.A. . You can install the bullet button your self . If you live close to a Turners outdoorsman
http://www.turners.com/ They tend to have sales all the time on ARs
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If Jesus had a gun , he'd probably still be alive !
I almost always write my posts regardless of content in a jovial manor and intent . If that's not how you took it , please try again .