I have the tip flex T3 and the mid flex Zero Gravity, plus a few Power Matrix.
I am going outside the box however on this one and agree with Cliff on the ECHO. A friend had one so, I was able to check it out. It will be very, very, close to the feel of the T3 mid flex.
I am going to offer one more. McFarland. Yes I know it is a name associated with OUTSTANDING GLASS! but he also makes some of the sweeeetest graphite I have ever seen and cast.
I told him I liked the fill of the Loomis GLX, so he sends me his GTX.....OH MY! A little more added to his tips then Loomis but, it makes all the difference in the world.
It is a beautigul green (like Winston) and he makes all his own hard ware.
He also sells blanks and all the fixings. McFarland Rod Company