I just bought a Glock22....I am now shopping for my 2nd firearm. I was considering a G17 or maybe a G19- but I am also temtped to buy a shotgun. In particular- the Remmington 870.... the primary purpose of this weapon would be for home defense (as the G22). I am new to this so I thought that I might benefit from the advice of some experts...Which would be a wiser "investment" ? Thanks in advance for your expert advice!!