I have had a Davis speedfeed II stock on an old 870 Wingmaster for a number of years. This is just a standard black stock, no detached pg or shell holders. I bought it used off the bay and couldn't be happier. It has a much nicer solid feel than the synthetic Remington stocks. The stock pad wasn't awesome, but that's not overly hard to change to fit your preferences.
I don't know if anything has changed with the stocks or the company, but I have been happy with mine.