Lots of good lubes but RemOil is toward the bottom of the list for this purpose. I use a lot of Mobil 1 5W-30 or 10W-30 full synthetic (brand IS important here as is the fact it is full synthetic). Even though it is oil, it stay on the rails.
Other good oils made specifically for guns include Militec-1 and Weapon Shield. I have found BreakFree CLP is a bit "thin" for this use, though I use it for other things.
Jim's Rules of Carry: 1. Any gun is better than no gun. 2. A gun that is reliable is better than a gun that is not. 3. A hole in the right place is better than a hole in the wrong place. 4. A bigger hole is a better hole.