What's the difference between a swim spa and a pool?
Pools are traditionally geared towards hot weather and are generally for holding cold water. Swim spas can be either hot or cold and you aren't stuck with either option as you can change the water from hot to cold on a whim. Pools also tend to be a uniform shape and are not suited for just sitting in and lounging unless you purchase extra gadgets and gizmos to put in them. Swim spas, however, are each specifically designed to seat people in the lap of luxury while many of them are also large enough for actual swimming. Pools generally hold more water but that's not necessarily an advantage, particularly during these difficult economic times.
One of the most interesting differences between swim spas and pools is that swim spas are completely portable and pools typically are not. Clearly, a kiddie pool is portable but most other pools are large enough that moving them around is either impossible or likely to result in a great deal of damage. Swim spas are designed to be an investment that you take with you wherever you decide to move and so are easily portable from one location to another.