Phil, That's great...
I'm glad you found somthing that works for you.
The people I know that ran Speedfeed stocks had lots of problems
after running from 100-200 rounds through thier guns.
They discarded the stocks after the rounds kept falling out of the stock slots.
The most important thigh, though, is you have confidence in wahtever you're running.
Personally, the sidesaddle/buttstock pouch combo works great for me. I looked at the Speedfeed, but, from what I had heard, and, seen, I went the way I did and am happy and comfortable with it.
YMMV.