Have played them both - EC2s on my kit at home, G2s on a set at church.
I chose coated EC2s on my set after coming off a well-played set of Pinstripes and deciding to switch to Evans. I had a recording project coming up and wanted the same sort of built-in tone control that the Pinstripes offered, but the EC2s sounded more tonal, with less thwack, with more of the drum's note.
The church set had coated G2s on them and they offered more response at the cost of more overtones. But in a live setting the overtones were not an issue and could be dialed back either with a small amount of muffling or at the board.
If I had it to do over I might have chosen clear EC2s, I got one for a 16" tom later and got a bit more attack out of the drum.
Having said that, I really enjoy the EC Reverse Dot Coated for my snare. I have read other comments here about loss of sensitivity and volume, and experienced neither with my snare (a very ringy, sensitive steel inverse bead shell).
If you like the response and tone of a single ply head, Evans also makes the EC1s, which are probably closest in performance to Powerstrokes.