I think the green hit is the best if its some really like fluffy crumbly bud, meaning if its a little dryer and burns real well, the green hit of that is always the best. But for bud that you gotta get going, the 2nd or 3rd are killer. The way i always get a fat hit, is instead of just lighting it and hitting it right to the lungs straight up, ill hit it like a joint/blunt first like into the mouth like lighting a cigar, puff a little bit out and then inhale hard and thats how you make a pipe rip like a bong. It gets the bud so nicely cherried with the first puff, that the 2nd puff its pure bud no lighter just a perfect fat hit. Everyone knows that its easier to get a fat hit with an existing cherry than a lighter/flame source.