I know this is a bit advanced for a first-time kegger, but this is my 2 cents worth on this topic... I just kegged (last week) 2 5 gallon kegs from my conical. Since it's a big beer well over 6.5% ABV I added fresh yeast to both as the residual yeast is pretty well spent. Keg 1: dry hopped immediately without priming sugar (the fresh yeast will help finish fermenting the rest of the residual sugar) as it will be chilled, filtered, force-carbonated and served within a week of kegging. This is my New Age keg. Keg 2: 5 Oz priming sugar added at kegging. It will be dry hopped and fined with Isinglass (no filtering) about a week before serving (2-3 weeks in the keg). This is my Traditional keg. I use a spunding valve so as to never over-carbonate. And I connect Co2 after filling the kegs and purge the oxygen with 5 PSI Co2. After 2 days, keg 2 (primed) was up to full carbonation PSI! And keg 1, after 4 days in the keg and relying just on residual sugar, was up to 92% of full carbonation PSI. But keg conditioning isn't just about carbonation... This is my first side-by-side comparison, so we will see...