Recce spec includes a variable scope, if I recall correctly. Although, from that perspective, there is no official Recce spec...only a format, so to speak.

Depends on your intended use, GD. I have not done well "in the field" with the variable scopes. I don't like the eye relief challenges. I am a HUGE fan of the Aimpoint T-1...KAC or Larue mount (I use a Larue). Lightweight, Fast acquisition, Insane battery life, and robust as hell.

It's personal preference over the EOTech (you need to have fun behind both before deciding...find a gunshop, turn them on and play around with them....move fast around isles while keeping it in front of you....also, try setting it on an object and focusing on something far away outside 100-200 yd targets if possible). This will give you a feel for how you like the different reticles for CQB vs. Steady Range shots. I like simplicity...and the single red dot does it for me. The EOTech is too busy for my personal preference....but, that's just me. It's like Glocks vs 1911's. You need to try it.