What makes construction so important?

If a cigar is under-filled, constructed by skimping on the number of leaves in the filler, it will draw easily. Now that's often considered a benefit, but the ultra-easy draw will be offset by hot burning and harshness, because in an under-filled cigar, there are too many air pockets, causing a fast burn and thus a hot smoke.

If a cigar is overfilled, it will be hard to draw, sometimes impossible (plugged). This is the cause of the greatest number of complaints by premium cigar smokers. A hard-to-draw cigar gives a much lower volume of smoke, thus much less taste and aroma, and a lot of frustration to the smoker. If you run across a plugged cigar, you can attempt to fix it by gently rolling the body of the cigar back and forth between your fingers. Go up and down the whole cigar and sometimes this will loosen up the filler enough to unplug it.

Quality in construction should be there time after time, if you are smoking a "good" cigar and is essential to achieving good taste and aroma. You can use the best, most expensive tobacco in the world, put together by the most creative and knowledgeable blenders, but if the cigar is not constructed properly, none of the intrinsic quality of that tobacco can be brought home to the smoker.