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Mine has removable jets in most locations that can be replaced with other types of jets, although the options seem limited. But I can't move a jet from one spot to another. Is that what you mean?
HotSpring, Tiger River, Solana, Caldera all offer this feature.Plus, HotSpring has that one jet which moves all by itself..... http://www.hotspring.com/cgi-bin/download.cgi?c=7&f=Video/clips/moto_massage_lo.wmv
Marquis spas offer this feature.
Bullfrawg Spas can move the whole seat.Terminator
Sundance Spas offer the the Fluidix series of jets that feature a variety of different massage types in one adjustable bearingless jet.The massage is incredible.The jets should last a lifetime.
Most quality spas use [glb]Pentair[/glb] or[glb]Water way[/glb]jets. For instance, you can interchange jets from 2006 MARQUIS, D1, and MASTER SPAS, as long as they have the same size jet face.