I went back and reread your original post. I will try to answer your question with that in mind.
My favoite gun? All of them! That's easy.
I have 8 guns left, with two of those scheduled to be handed down, as soon as I settle an argument in my own mind. The kids stayed up to date in my vigilante days, that's 10 years; and then my volunteer PD days, 10 more years. I lived in a nice, middle class neighborhood, that turned very dangerous when hostile, drug dealing gangs moved in and tried repeatedly to "take over." The kids all want the "experienced" guns. I suppose those guns will become family legends. That's fine.
You indicate that you are more interested in a gun for travel in a motorhome. You, also, mentioned that someone fired through your windshield. I strongly advise against engaging in a gun fight between moving vehicles. If you want to pursue that type of preparedness, you need specialized training for that, and at least two guns. I had that problem as a constant threat, in our cars, and used a 357 mag, revolver and a 357 mag Winchester 94, Trapper, "car guns." One stops the vehicle, blocking as much traffic as possible. Then one uses the revolver for cover, getting to the carbine. The carbine is used to keep the fight at a distance until help arrives. Training for this is a bit rough and tumble. Those guns are not, otherwise, weapons of choice for self defense. Avoid areas where this is a hazard, and skip the preparations for it. YMMV
My "favorite" for ordinary carry was a Colt, Officer's Model, 45ACP, stainless, very lighty modified by an experienced, locally renowned, gunsmith, for concealed carry, quick access and smooth draw. Recently my oldest son "inherited" it. It had become unmanageable for me, due to weakening wrists as old age takes its toll. Too painful to shoot. I really hated to see it go. My 9mm Glock 26 moved up, into the vacancy. It is unmodified. Comes ready to go, right out of the box.
Our RV guns are J-Frame S&W Revolvers. Mine is an Airweight, hammerless. It's a mean little gun and it hurts to practice, due to recoil. My wife's gun is stainless, with a hammer. Heavier, more friendly to the shooter. They are revolvers for reliability, particulary for sleepy, clumsy hands, when things go bump in the night. They are modified with Crimson Trace laser sights. They are loaded with Glasser Safety Slugs, for limited penetration and ricochet resistance, in a motorhome. Both are experienced guns, and we have confidence in them. Great for defense. Really bad choice for offense. If I must take the fight to the enemy, I'll use the Glock. Again, YMMV.
There is no safe way to do a gunfight. :
I hope this is useful to you.
Ray D ;D