The Ecsta MX is a "dry" performance tire kind of like the BFG g-Force KD or Falken Azenis so if it rains a lot you may want to stay away.
The Eagle F1 GS-D3 is supposed to be Goodyear's top of the line dry/wet performance tire. It competes with the Bridgestone S-03, Yokohama AVS Sport and Michelin Pilot Sport. The compound is a bit harder so it lasts longer and isn't quite as loud. I would say that in terms of dry performance it's a step between the Dunlop SP9000 and the aforementioned three tires. Not a bad choice at all really, although if you want the best wet traction out there the S-03 is the way to go.