Ouch, my aching head!!!

Thank you so much for all your assistance.  I think I have generally narrowed it down to three stones, all at Whiteflash:

1.  http://www.whiteflash.com/hearts_arrows/A-Cut-Above-H-A-cut-diamond-499318.htm ;

2.  http://www.whiteflash.com/diamonds/diamond_Details.aspx?itemcode=AGS-5196401 ; and

3.  http://www.whiteflash.com/round_ideal_cut/Round-Ideal-Cut-cut-diamond-630766.htm

Which stone do you all prefer on a price performance basis.  Stone #1 is my favorite but I noticed that it tends to show a little bit more light leakage (or at least "white areas") in the idealscope image.  Is this a concern? Would it have any "real world" impact on performance vs. the idealscope image for #2 (with fewer white areas). 

If I don't mind the price but am more concerned with the value, is the much discussed ACA H&A premium worth it (ie 1 & 2 vs. 3).  Can any one think of any drawbacks or weaknesses in stone #1 I should consider?

Thank you all again for your help.

I think if I were you, I would call Whiteflash and ask them which is "the best."  I'm not sure you could go wrong with any of them.  They can line them up and discuss the pros and cons of each stone (sorry to wimp out on you), since they're all in their stock.

I am biased towards the ACAs, maybe because I have one, and it ROCKS!