I would second your vote regarding the ATT with the caveat that I have the v1, SE2. Many had stated that this head combination was very similar to the SE1, making Stan re-design the SE2 to be slightly more aggressive. I found the v1 SE2 to be about a perfect combination of mild, yet effective, when loaded with the Pro blade. The same razor when loaded with a Pro Super is very close to the RX with respect to aggressiveness and blade feel on the face. I too shave ATG on the 2nd and any subsequent passes.
As much as I like the Rx I do prefer the SE1, with the Pro or Mild blade, due to the fact that I only shave ATG and it is a bit much for me. If I were a more conventional shaver I would definitely think otherwise.