The Ilford quick washing technique (evolved after much practice to my own, essentially similar to David Allen's) I've made use of since the 1980s. My negatives from that era remain in pristine condition with absolutely no fading, so I'm satisfied that it works. Kudos to Ilford and to Dave for their positive input into our processing successes.
I've also used distilled water as a final rinse for many years. I buy a one liter bottle of it (for +/-A$1.50, going by the price tag on the last bottle I purchased at our local supermarket), mix it with Photo Flo, and use it for three months. In-between processing sessions it rests safely in the fridge. I make sure to check it for 'deterioration' before each processing session. So far, entirely good. It's a small expense (I've had the Photo Flo concentrate bottle since around 2003 and it's still far from empty) for consistently good drying results.
Overall, good info in these posts. We need more of these threads.