The KISS setup

AKA Keep It Simple (Stupid, Sloppy, Sox fan, etc.)

We like all-grain brewing, don't we? Its pure, and pure tastes good. And its cheaper, and cheaper feels good. So how to purely, simply, brew with grain? Here's my $0.02 cents (canadian or US, I guess) on the simplest all-grain setup:

Buy 3 kettles (ouch!) and put spigots on them.
Get a bucket to keep your tools in sanitizing water.
Get 2 kegs

Kettle 1: put false bottom in and connect to spigot. Mash in this kettle.
Kettle 2: Attach a gentle spray device (rain-type shower head?) to this spigot. Heat your sparge water in this Kettle
Kettle 3: When ready to sparge, point the spigot from Kettle 1 into this Kettle. Spray the sparge water from Kettle 2 into the grains in Kettle 1. Boil and hop in this Kettle, then place the wort chiller directly in this Kettle to do the chill (this sanitizes the wort chiller, too).
Keg 1: Drain the chilled wort into this sanitized keg, which will be the Primary. Swap out the pressure release valve for a fitting connected to a blow-off hose. Pitch your yeast into this Keg.
Keg 2: Rack into this sanitized keg, which will be the Secondary. Swap out the pressure release valve for an S-tube. Replace the pressure release valve on Keg 1. Use CO2 pressure in Keg 1 to transfer beer to this Keg.
Keg 1 (again): Rack from Keg 2 back into this keg, filtering if desired. Then force-carbonate or prime for cask-conditioning, as desired.

Thats the process!

Advantages: Simple! Minimal Oxygen pickup during the racking, because you are using CO2 pressure to transfer. Optimum sparge as you are not transfering grains from one kettle to another, and using a gentle spray to prevent channeling
Disadvantages: Costly! thats a lot of stainless equipment to buy all at once, so we may prefer to use a converted cooler in the sparging process, and glass jugs which we have already for primary / secondary. Also, time intensive, as we have to manually work the sparge sprayer over the 90 minutes its supposed to take.

Now, lets have some ideas for improvements...