My fellow plebs, there's no need to argue or debate on what's the best Bitcoin buying strategy. We simply need to know that if we want to HODL, it should be done with the best asset that will continue to exist for many cycles. If you want to invest in commodities - invest in Gold, if it's in stocks - choose the best companies, but in cryptocurrencies? HODL Bitcoin. 
You wouldn't really blame people who talks alot about Bitcoin investment strategy, because in all investment you have listed above,either commodity, Gold, stock, companies or crypto currency. Bitcoin is still more advantageous over all. Bitcoin is limited in supply an has a huge market cap and market dominance which makes it to be more valuable than others. Let take for example Gold, gold Is a physical asset. Which is not limited in supply because people continue mining Gold almost everyday and that will drastically reduce the value of gold or keep it stagnant. But bitcoin is limited in supply and hence it becomes preferable over Gold. because Bitcoin can be baught at ease online and can be sold at any given time compeard to gold which requires physical p2p. Looking at this graph you will see while Bitcoin is more preferable than Gold and why people talks about DCA and HODL all the time because the volatility is top notch and grow increasingly over time.
Though it might not be a new version, but want to graphically show you how Bitcoin is important and why you need to invest and hold for long.
Get the context. The point is not about being the best investment because of price movement or ROI, the point is being the best investment in a particular sector because the HODLer is assured that the investment will continue to exist for decades.
Plus ser, I'm not comparing Gold and Stocks with Bitcon, then saying that they're better than Bitcoin. In fact, I'm in the part of my journey that believes each has its pros and cons.