My brew schedule was unfortunately delayed by 2 weeks, so I am thinking I'll whip up a nice Dark Mild this weekend for a quick brew day. Two questions: 1. I normally fly sparge, but I've read with low abv, delicate beers it's best to no-sparge. Does anyone know about no-sparge efficiency? 2. I am thinking I would love the soft, delicate carbonation of "cask" conditioning. I've read that keg conditioning requires less sugar than bottle conditioning. Does anyone have experience with keg conditioning?