robtherich,
I think that, for me, it's a matter of attitude. I tend to do the crossies with my old man (we each have a printed copy). Sad innit! Sometimes we can romp through it and at other times, even have a problem with Rufus (Guardian) and Dante (FT) when both of them are compiled by the same person!
A tea-time crossword is usually a nightmare for me as it has so many possible answers and I find the same about most quizzes, which is why I rarely attempt them.
One for cheap thrills? That's me!