TP -
You are dead on the money when you suggested that all horns in the eclipse line would have a similar blow, I would suggest that with a few exceptions, the blow is EXACTLY the same. Some bells at the opposite ends of the spectrum will seem to play differently, but that is a feedback issue. For example - a medclassic bell will shear the wings off a moving mosquito at 50 meters, and the sound is strong, bright, clear and in your face, EVERYONE's face. As players, we will generally back off a bit when playing sucha beast. On the other end, we have the large copper. Same blow. Everything takes the same amount of effort, but you may not get the 'in your face feedback', especially if you're in a section. It may take a day or two to realize that the sound is actually HUGE and it is more than capable of producing without having to 'push it', to make up for the missing 'edge'.
As far as your situation - I would recommend MR in silver, MHY in silver, and perhaps even the MY in silver. MR is my favorite bell by far, but the MHY has a lot of the qualities you are looking for as well. Depending on what your natural tone is like, MY may be it - I would narrow your field of fire to these 3 bells. But then again we have this copper bell....!!
Have fun, play hard...