Cigars, like knives, are always an interesting topic for discussion.
I currently have 5 humidors in use, with around 40 different brands, and maybe 350 or so cigars divided amongst them. In a dryer climate like an Arizona summer, it is a real learning experience to care for cigars.
The 70/70 rule is a good one...although some of us prefer our cigars a bit drier (say 65%-66%). It is really important to keep the temperature as close to 70 degrees as possible, like Broken Camillus mentioned. Dry and cold is hard on the tobacco. Too warm and too moist does promote mold, makes for a poor drawing cigar, but even worse, may allow the hatching of the tobacco beetle, who has a voracious appetite for cigars.
Most manufacturers freeze their cigars to help prevent this...and most sharp guys like Lew Rothman at JR Cigars, handle their product very well...but not
everyone always does.
I do think cigars are a lot like the cutlery industy. Contract brands abound

, lots of junk out there

, many great values

, and some mind boggling options

available.
Something for everyone.
JMO.
Bill