I have been seeing some really good prices for both the Shockwave and Tac-14 recently. Neither really held much interest for me when they first were released, but it's just a matter of time before the gun grabbers start to view these as "assault weapons". They also seem to be reliable and accurate. I don't know anyone that owns either of these guns, but I would love to hear some owner feedback. Which is the better of these two options and should I get it in 12 or 20 gauge. Thoughts and advice would be appreciated.