All cigar rollers use the same "bunching" process for long filler cigars. It's in the skill of the roller that the cigar is not bunched too tight. I don't think anyone necessarily has that market cornered (e.g. "the entubar bunching process") - it's more in the quality control process. Even the Cuban cigar factories have been struggling with ensuring their cigars do not have a tight draw.
Fuente does have a very tightly controlled QC process. A number of other factories do as well. Davidoff is another that comes to kind, though (as Will said) Padron and Camacho do as well.
honestly, I've done very well by staying away from cheap cigars. I've noticed my largest issue with draw has usually been with bargain basement stuff.
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