Reef-ready tanks: AGA, Oceanic or other manufacturer?

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I am looking at either a 75 or more likely a 120 (48x24x24) reef-ready tank.

I know that Oceanic and AGA make good tanks. My other choices would include Inter-American or any other local/custom manufacturer.

Used is not a good option for me as I live out in the middle of nowhere, if I lived in Vancouver I would shop around for a used tank.

I am concerned about the AGA tanks having a plastic centre brace, I wouldn't want it to melt under the lights. (Planning on 2x250W metal halides plus or minus VHO actinic supplementation).

Any advice on which brand of tank would be best to go with? Also if there is a custom stand manufacturer people could point me to, I like the Oceanic stands but their canopy is inadequate (only 6" clearance, not enough to mount metal halides in).