I've been using plain old Hoppe's oil for more than 50 years. Never a problem.
Been using #9 to clean with all that time too.
So what makes all this new fangled stuff better?
Since you asked :
There are a bevy of standardized engineering test standards dealing with resistance and coefficients of friction, in various contexts , so if dig deep enough , it's facts and not speculation and hype .
Greatly oversimplified- The modern stuff can Potentially be " slippery-er " than old school dead Dinosaurs .
Modern Stuff can Potentially function as needed at greater range of temperature extremes . Both heat generated by firing , and below zero ambient Temps.
Modern Stuff can Potentially keep more " crud " in suspension, and less prone to forming hard sludge .
Modern Stuff that is applied in an evaporative carrier that dries to leave a dry lubricant film can Potentially be less susceptible to ambient dirt and sand , or firing residue .
Most of the time , the differences aren't critical . ( Except for the temperature thing . If your hunting in below zero ( F) , and congealed conventional lube slows down the firing pin enough that the gun doesn't go bang , that's an immeadate problem )
All of that said - Any lube is better than no lube . Most everything will work acceptably well, if there's enough , and it's fresh . There are a plethora of products nominally intended for other applications , that work as well or better than gun specific branded . No one product or product line is " best " in every factor .
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Cleaning :
Combined Cleaner / Lubricants inherently can not be excellent at both . But yes , products that do one thing reasonably well , and a little bit of the other , can indeed be handy and very useful in your range bag , or otherwise on the go .
Copper Specific cleaners can indeed be amazing at removing copper from bbls . ( Albeit usually very mediocre at removing generic powder fouling or lubrication)
The foaming products that you spray in the Bbl and let sit to work , can work very well . Doing all or most of the cleaning by chemistry, instead of repeated brushing , or zillion patches , reduces the wear / damage to bore , throat , and crown from less than ideal cleaning rod technique .