Are you concerned with quality issues or functionality? In terms of quality, you can't go wrong with Eagle, High Speed Gear, or Tactical Tailor. For three gun I would check this out:
http://www.skdtac.com/Blue-Force-Gea...-p/bfg.510.htm
Look around these sites as well:
http://www.skdtac.com/
http://www.optactical.com/
http://store.greygrouptraining.com/