Re: Stock recommendations for AR15
It does indeed depend on what you're doing with it. I have a three-way adjustable on my XC gun, and it'll be adjusted four times across the course. Once for the right LOP and cant for Offhand, shortened and the cant reversed for sitting rapids, lengthened a bit for 300 prone rapids and finally, extended just a bit more for the 600 slow fire. That said, I still shoot Service Rifle almost exclusively, which means a standard, non-adjustable A2 stock. There, I have to adjust my position around the rifle.
Some of us need the adjustable capability, and some don't. You may find it useful in some situations, but I think you're chosing wisely be assesing your own needs.