Differences in various Maltster's 2-Row

I've been listening to Basic Brewing a lot lately & a common theme I've picked up there is that small batch experimentation is the best way to answer these questions.

As the others have said, brew up a 1/2 or 1 gallon wort using each malt and ferment in the same location/temp using the same yeast for the same time & taste the result. Bring friends too, taste is as subjective as olympic gymnastics so you'll need a panel.

There is a large difference in flavor between maltsters in my experience. Which you prefer is subjective and as pointed out, needs to be determined by experience. My preference is Rahr, followed closely by Great Western.