I have seen pictures of the new top rail, has it's weight been published yet?
Red dots an irons are what I am most comfortable with, I have exit pupil issues with scopes.
Red dots have unlimited eye relief and their location isn't critical unless you plan to run a magnifier.
The T-1 is awesome and I'm currently running two of them on different weapons.
The EOTech offers a more precise 1 MOA center dot and I really like the 'big screen' view.
I hope that helps.