I think you might be talking about lines like spa-in-a-box or Softtub. These are decent lines for what you pay, just don't expect too much from them. Across the spa industry anything that is not concrete/plaster or built in to a pool or the ground is considered "portable". If this is what you ment, you have found a plethora of knowledge and information (not to mention opinions). Give us a little more discription of what it is you are looking for, we would love to help.
