This thread is still going?
The Dave Armstrong "Crane SOPMOD" stock was a kick ass stock 13 years ago. Its generally been supplanted by better stocks since then.
Magpul's CTR is a great small gun stock, while the STR has replaced the ACS for me in on my SR-25's, and heavier 5.56mm guns (which I've pretty much divested all of).
Nothing against the VLTOR (Eric K had some great designs that had to get around Dave A's SOPMOD patent), as Dave let the patent go, anyone can now make a stock with storage in it as part of the stock (Magpul and VLTOR etc had attachments do that), I just prefer the Magpul designs.
Stocks are a very personal thing, to me I have no need of a fixed stock. I do shoot a wee bit better with an A2 or PRS stock on a SR-25, but the fact they are pretty much useless with armor, or heavier clothing makes them a no go for me (and the PRS is heavy).