An electric grinder is useful when it makes a daily brewing routine more consistent and manageable. Burr geometry is one part of that choice, but neither a conical nor a flat design guarantees a particular flavour or temperature result. The complete grinder and its adjustment mechanism determine how the design is used.
List your actual needs first: espresso, filter coffee, the usual dose and whether beans change frequently. Compare adjustment resolution, accessible cleaning, retained grounds and how easily the machine fits beneath shelves. Check these details for the precise model rather than transferring specifications from another version in the range.
Where possible, compare grinders using the same coffee and a measured recipe. Separate operating convenience from a claimed taste advantage, and look for repeatable evidence behind performance statements. A grinder that suits the household's routine can be a better purchase than a more elaborate machine whose features rarely get used.
The conversation
A good question can make a better brew.