Or redstone blocks, 'cause you know - fuck effinciency.
Efficiency is not a thing when it comes to AS, you get redstone out of bleeding sand which is infinite TY to a cobble gen.
I say use 2 redstone blocks for good measure. My comment wasn't about efficiency either, crafting a lever and placeing it is easier then crafting a servo, placing it and then setting it.
A redstone block is probably easier then a lever in AS, levers do afford more control though but most machines don't need to be turned off except in the case where your ME is overflowing with diamonds.
I remember someone asking how they should process their ore chunks for maximum efficiency they wanted to know if they shuould craft them all to gether and hammer for a little extra metal. I had to remind them that their resource was infinite and you can't get much more efficient then infinite.
AS is not really hard, but it is unforgiving when you make mistakes. Also the quests involve a lot of waiting and automation savvy.
You know what, I'd like to see a sort of sky map like AS but instead of ex nihlio providing resource you get your metals from meteorcraft meteors. But you'd have to test how metiorcraft handles the void, they might need solid ground to impact.