Really I'm just thinking side saddle vs rounds on the stock. I have no experience with side saddles at all. I'd imagine they are much faster due to the location. The only thing that scares me is binding up the action by screwing some junk to the receiver. I have the power pack on my Spec Ops (5 rounds on the stock) and this seems to be a much safer option since it doesn't interfere with the action. However, it is probably slower and it is somewhat bulky. What do you folks prefer and why? If you run a side saddle has it given you any problems? If my power pack fell apart while firing no big deal, but if those side saddle screws loosened up in the receiver that could be the end of your gun functioning.