I have used Breakfree CLP since the early to mid 80's. I have never had a gun rust and I never will. I'll use nothing else. Just my experience over the last 30 years.
What works well for you is the best thing to use. A lot of that will hinge upon your location, how you store your firearms, how much time you are willing to put into maintenance, and where you hunt.
When I lived in deep south Texas, I was at 29 ft. altitude, and was twenty miles inland from the Gulf coast. Rust was a serious issue there.
Now I live 600 miles inland and at 4500 feet, in the mountains of the high Chihuahuan desert. I'm buying a lot more blued firearms and less stainless steel ones, these days.