Help! Which one should I get?

[JDCgolfr]

Any and all opinions would be greatly appreciated.
http://www.goodoldgold.com/diamond/11322
http://www.goodoldgold.com/diamond/8618/
http://www.goodoldgold.com/diamond/11105/

 

[Gypsy]

First or last. Not the 2nd one. I personally would rather have the I because of the size.