I need to purchase a new computer for my wife, and she has a strong preference for console setups. The two options that I have come down to are the fully AI Aqualung i550C console and the Shearwater Peregrine mounted in a boot with an SPG (we already own the SPG). The Peregrine and boot are about $150 less than the current price of the i550C console, but my primary concern is ease of use, not cost that will be amortized over many years and dives. Which option do you think is best?