Heavy weight paper can lend an aura of importance and seriousness not found in flimsier products. This is especially true in business cards. Often thin paper screams cheap desktop printing even without the telltale perforations from some perforated business cards papers.
Thicker papers hold up well when there is heavy ink coverage. For full color photos from your desktop, thicker inkjet photo papers are best. However, some desktop printers may not handle thicker papers well, especially if the printer doesn't have a straight paper path.
For desktop and offset printing choose a paper that "feels" right to you and will work with your desktop printer or the commercial printing process you choose.
