Your point about 'patience really paid off' hits home. I read an article last week where a pro painter said hand sanding on ceilings lets you feel for bumps that machines miss. He argued that power sanders can sometimes over-sand flat spots while missing high points. That seems exactly right for tricky angles like vaulted ceilings. The control you get with a block probably saved you from gouging the drywall. Do you find that hand sanding helps you catch more flaws before priming?

Learn from TV' - which show causes the most headaches?

I always rinsed rice until I tried making paella without rinsing. The grains held up better and absorbed the broth more fully. Who knew skipping a step could make such a difference?