Final stretch, please help, first diamond purchase

[cj_sra]

I am new to posting but I've been doing a lot of research on this site. Here are the diamonds that I have narrowed down on for the engagement ring, which one would you pick?

Blue Nile Signature 1
(1.57 carats, I color, SI1 clarity) - $10819
http://www.bluenile.com/diamonds_details.asp?__fun_frm=i&pid=LD00333962&filter_id=0

Blue Nile Signature 2
(1.36 carats, H color, SI1 clarity) - $8809
http://www.bluenile.com/diamonds_details.asp?__fun_frm=i&pid=LD00148869&filter_id=0

James Allen "Hearts and Arrows" Ideal
(1.55 carats, I color, VS1 clarity) - $10820
http://www.jamesallen.com/diamond.asp?cid=131&item=881959

Whiteflash ACA
(1.617 carats, I color, SI1 clarity) - $10598
http://www.whiteflash.com/hearts_arrows/A-Cut-Above-H-A-cut-diamond-161907.htm

The most important thing for me is cut. I am assuming that BN signature, JA H&A and WF ACA are in the same league.

I would really appreciate some help

 

[JulieN]

I''m down to 2 stones if i''m absolutely limited to these.

What setting avenues are you exploring?

 

[cj_sra]

Hello Julien,
I''ve been reading a lot of your helpful posts on other threads

I haven''t really decided on a setting yet, but I will be going with something similar to this (sorry it won''t let me attach pictures):

http://www.bluenile.com/product_details.asp?oid=4122&page=1&col=1&row=3&pos=7&set_shape=