I normally prefer to smoke a cigar at home because most cigar lounges do a poor job at ventilation. That said, Orange County Cigars in Costa Mesa is a small, off the beaten path place that has relatively fair prices on their modest cigar collection. Siglo Cigar Lounge is decent.
I rarely go there because it is so far away from me, but Maxamar Cigar Lounge has a great selection of cigars.
3744 E Chapman Ave # E
Orange, CA 92869-3935