I'm looking at either Blue Surf or Aqua Blue for our colors. PB just called and said that the Blue Surf is considered a category 2 so it would be $300.00 more then the aqua blue which is a category 1. This is a 2nd party that our backyard contractor uses. I asked what does the category mean. She couldn't really tell me, just that they are graded differently due to materials used, blah, blah, blah. Has anyone ever heard of this? Also, Anyone close to Simi Valley, California with a Aqua Blue or Blue Surf pool we can look at?