Have you determined that your above average regimen leads to better performance?For years I used a MidwayUSA vibratory tumbler with walnut media. But I still had to do some cleaning of the primer pocket AND check inside for stuck media. During those operations, I became more aware that the inside of my cases wasn't getting as clean as I liked (spotless), and started wondering how much capacity I was losing by the insides not getting clean and how that affected groups, etc.
So, when I smartened up, at the first opportunity, I purchased a Lyman Ultrasonic cleaner. It's quicker than the vibratory tumbler, cleans the insides and primer pockets better, (spotless), and there is no concern of media stuck inside.
My procedure is to:
deprime using a universal depriming die
clean in the ultrasonic cleaner using the solution from the manufacture.
dry the cases using a Frankford case dryer (looks just like a food dehydrator I use for jerky).
I then burnish the inside case neck (one pass in-out with 0000 steel wool wrapped on a nylon bore brush in a drill), resize, trim (if necessary),
If they are fired factory rounds, I will deburr and bevel the inner flash hole like I do with new empty cases.
Then before loading, IF I want to impress someone, (HA HA), I will put the cases in the vibratory tumbler with corn cob for a higher polish. (But I don't do that very often as then my inner Adrian Monk kicks in and I wonder if any media is left inside the cases prompting me to go over them with light compressed air).
I also use the brand pictured but I should have qualified that I use long grain rice for larger cases (.300 WinMag and .338 Lapua Mag). It seems like the long grain rice does not produce as much dust and lasts a little longer. Long grain rice doesn't seem to work as well in smaller cases like .223 Rem/5.56 NATO, etc. so I move to the medium grain as you suggested.