I think I''ve decided on this stone from Whiteflash for $3380. It looks to have a nice spread and does well on the HCA. It is only rated as a Very Good cut by GIA. Is this a concern?
I had decided to give up a little in the cut for a little more spread. I may upgrade to a 1 ct ACA H&A in a year or so.
http://www.whiteflash.com/round/Round-cut-diamond-499411.htm
PDF from GIA attached.