With it's tart component, Dot can be a 'punch in the mouth' to the unaccustomed despite it being sweet/ very sweet. If tart is your thing, Dot will be your thing. While I haven't eaten an Edward I didnt like, compared to Dot, I'd say Edward is mild and much smoother/refined.
p.s. WRT indian mangoes, I'm a huge fan of Mallika. (highly disease resistance, sets lots of fruit, small seed & lots of fiberless pulp, but more importantly- a distinct sweet orange flavor). yummy!