I've been on the hunt for the 14" Entry model on GB and saw one is up for auction. For those of you who own the 14" SBS model of the M4, how do you like it? Significant advantages over the 18" model? I used to have an 18" model and sold it... I now regret it, of course. Considering going the NFA route but wanted to hear how it performs compared to its full size brother.