Re: Retro MTB Touring.
The Alivio ones are bent steel - ugly but tough! I'd run them to destruction. While they are heavier than XT, that matters less on a tourer as you'll have other stuff on board.
On the wheels, another advantage of 7 speed is that it has less dish than 8/9/10 so building a tougher rear wheel. I run 7 speed on my tourer (11-28 rear with 24/38/47 front) which gives something low enough to haul a full camping load yet high enough top to take advantage of any tailwind.
The Alivio ones are bent steel - ugly but tough! I'd run them to destruction. While they are heavier than XT, that matters less on a tourer as you'll have other stuff on board.
On the wheels, another advantage of 7 speed is that it has less dish than 8/9/10 so building a tougher rear wheel. I run 7 speed on my tourer (11-28 rear with 24/38/47 front) which gives something low enough to haul a full camping load yet high enough top to take advantage of any tailwind.