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.