In general, I would have the attitude of wanting a "good enough" education for my boys. Mainly because I was pushed way too much as a kid, went to a great private school and I then completely bombed at University because the second the pushing stopped I had no motivation of my own.
That said, I do love learning now and will learn stuff just for the sake of it (I just never want to do another exam ever again). So I'm keen to get the dses somewhere where they have the opportunity to enjoy the process of school and learning (which rules out more traditional private schools from the off).
Now we've been lucky that purely by accident (we didn't even LOOK at schools when we moved) we're in the catchment for a lovely primary. Ds1 adores it there, his teachers seem to give 150% and their enthusiasm for everything they do is catching. Such a nice environment.
Secondary worries me though, as the feeder & catchment secondary is dire - the results don't worry me, the continual bullying and disruption that I hear about concerns me greatly. Also of the reports of the inability to retain staff. I'm not quite sure what to do when they reach that age, tbh.
My choices seem to be: attempt to get them in to oversubscribed mediocre but "good enough" secondary, find religion, or pay for pushy traditional private (assuming they pass the exams).
Now given that I'm a broke atheist with principles, that narrows the field considerably