Aqautopia or Kalahari?

Hi all - we are taking our 11 and 13 year-old boys to one of your indoor waterparks for their birthday! We've gone to Aquatopia twice now, and adore it. So we figured we'd try something new to mix it up and are looking at Kalahari. But I keep reading it is not very clean. Any thoughts on which park is generally better? Thanks!