Agree - the only thing you’d get is a slightly smaller form factor and a rechargeable battery. The screen size and Rec display is the same - but you’d give up a lot of extra capability that might be useful if your diving interests evolve? Seems it would be a senseless swap!What would be the point? I ask because while a Peregrine AI might cost less, and be more attractive to the new purchaser, you already have the Teric and Perdix AI. If you traded your Perdix AI for a Peregrine AI, hypothetically, what would you gain? Does the 'far more than you really need' create problems? Messier interface or something?