Great post Butcher but those pails with built-in net pots have been have been available in basic black here in Canukistan for at least a decade. $14.99 was the last price I saw a few years ago. You still have to install your own air-stone and line tho. The set-up in your post is spot on keeping that air-line hole above the high water mark. No chance of leaks that way and a recommendation I heartily endorse!
A decade ago DWC was scoffed at by even the pros of the day but is now embraced as one of the most productive and vigorous grow methods for the serious home grower and even many commercial growers.
So much easier than other methods IMO using spray nozzles and massive pumping power to achieve the same results.
Each to their own I guess and whatever floats one's boat is fine by me!