I still think the wizz-wheel is under-rated- am I alone in this, do people not use it at all in the air, before or after qualifying?
I love the discipline of using a whizz wheel and working everything by hand. IMO you can't beat a perfectly hand written plog. However, it is extremely time consuming so these days I'll use SkyDemon, and sense check it afterwards.
Not long ago I planned a flight the night before. When I awoke the weather had changed and it was no longer possible to go where I wanted to so I re-planned. With SkyDemon this took about 5 minutes.