I've read only two of those six, and I wholeheartedy agree with you on one, and totally disagree on the other!
I had to refresh my memory of
The Far Side of the World, as it's so long since I read it, but having done so via Wikipedia I can confirm it's a cracking read. (Most of the Aubrey books are, of course.) But
The Steep Road to Garbadale I read in 2014 and though I've already totally forgotten the plot, I do recall I hated with a passion! My thoughts at the time:
To begin I was OK with it, though he's another one to keep jumping backwards and forwards in time without any warning, so the first paragraphs of every scene were confusing as I tried to work out who, what and, more importantly, when, but the further into it I got, the less enamoured I became as there's only so much teenage angst and sexual fumblings I can take. And the self-pitying, self-indulgent adult the main character becomes, his hypocrisy, his stupidity, his failure to act, his drink and drugs, his role as unthinking mouthpiece for Banks's socialism and anti-American rantings, and the wish-fulfilment aspect of his mathematician girlfriend (incredibly intelligent, incredibly beautiful, incredibly active, and incredible in bed), not to mention the complete anti-climax of the easily foreseen Great Family Secret made me come close to throwing the book at the wall.
I dunno, Vertigo, trying to guess which of the books you recommend I might actually like, is akin to playing Literary Russian Roulette!!