Interesting. I actually picked up 3 of the Meridan 11's at black Friday - but haven't installed them yet. I have mostly SPS and want high PAR. Time will tell what they crank out. I figure I can always sell them and probably break even considering what i paid for them during the black Friday deal.
The ATI Straton has caught my eye. I don't see how the Flex being more narrow would get the same spread and the Straton Pro, but it seems like that is not even available any longer anyway - the Flex, or the up coming X being the only options I think are available.
OP, how high will you be mounting these? Seems to me the Meridians are best with higher mounting than the ATI. I'll be needing to use the Wide lens since I'll only be about 8" off the water. I'll be curious what you decode and look forward to hearing what you have to say about them once you get whatever you get.