I have to ask, if there are not enough improvements over a D1 why are you buying a D2? do you own a D1? I have a D1 and can see many advantages to the D2.
There are improvements. For beach detecting it’s light years better than the D1 and even seasoned Minelab beach guys are saying that it is deeper than the NOX.
For land detection it is deeper with much clearer TID numbers at some depth. Some of the programmes are impressively deep and overall the build improvements to make it moreuser friendly are very good from the robust waterproof controller to the one button switch on/ off of the whole set up.
I’m now at the stage where I am able to use it audio only and I’m finding deep misshapen iron is easier to spot than the D1 with other audio info being much richer. Spotting the shape and depth of an item is better.
Is it £1400 better? Guess that depends on what you are looking for or need. Certainly the original Deus would find 95% plus of the things a D2 would find, maybe even more. But that last % would niggle me if I didn’t have one. Personally I got one because I witnessed the benefits of multi frequency with the NOX. I hated thinking I might be finding more with an MF machine.