I no longer own any- what I've used in the past, specifically, will not carry over to you as I simply used whatever I had the most training and experience with, and my situation differed from yours. What I will say is this: if you're going to get one, learn how to use it properly. Get professional instruction if possible (Frontsight is one example); if you have family/friends that are current or former LEO/MIL, spend a significant amount of time and ammo at the range with them running through the basic technique and drills. Follow this up with reading up on, and practicing basic tactics that are likely to come into play in your situation; movement, footwork, and situational awareness matters more than you can imagine. Know if/when you need it, it's likely going to be in a low-light situation, so choose your gear and train accordingly. Try to have a partner to at least run through room clearance drills with, at the very least using airsoft/paintball guns to get a "loose" feel for it; learn how to slice the pie, and learn that in general, attempting to clear rooms by yourself is a very risky proposition. I do not recommend you attempt it under any circumstances- I have a few years experience in this specific area and let's just say that I go to great lengths to avoid having to clear rooms by myself, even in full battle-rattle (Level IV plate carrier and a very capable select-fire carbine, among other niceties).
In short, don't get one if you aren't going to put in the time, money, and effort necessary to learn how to use it properly; you could get yourself and other people killed unnecessarily. Also consider this: you live in an apartment, and you plan on keeping it in a locked box. If someone were to kick in your door in while you were sleeping, what makes you think you could get it into action in time- and if you do, where you do think those rounds you manage to get off are going to end up? What are your walls made out of; are you particularly fond of any of your neighbors, because most loads I'd count on to stop a determined attacker would zip right through most modern buildings. Whatever you decide to do, do it smart, because anytime a gun is involved, it ups the ante. Oh, and since this is is bluelight, I thought I'd mention that possessing of a firearm (even if it is legal) while being in possession of drugs is a Federal Crime that carries a Mandatory Minimum 10 year sentence- just something to chew on. Stay safe
