seeking advice on 1.2 ct stone

[abeljr]

HELLO PRICESCOPE!!
I am truly grateful for all your help in education and investigation into diamonds and online sellers, etc.

I am looking for any advice, is selecting from these stones. This is my first diamond and it''s for an engagement ring (The setting will be a Cathedral Solitaire). I am sending the stone directly to an appriaser, but I am hoping anyone (with more experience than I at looking at numbers) can give me some feedback choosing from the stones below. My future wife and I went looking at rings (that''s I how I know about the setting), but the only instructions she gave were, at least 1ct., but the bigger the better.

After tons of research and sleepless nights - I have a $5k MAX budget for the stone, and foud these at a decent price...from what I can tell.
Any advice - from - online seller, EGL/EGLUSA cert, G vs I, VS2 vs Si1 - to - what I must ask the seller prior to shipping, Pricesopce customer pricing, et.al.
thanks!!!

http://www.abazias.com/database/NewDiamondInfo.asp?stock=1681040263

http://www.uniondiamond.com/diamonds/diamonds.php?search_type_id=3&action_type_id=2&item_id=AA964632&&1.21ct-I-VS2-Round-Brilliant-Cut-Diamond

http://www.uniondiamond.com/diamonds/diamonds.php?mod=search&search_type_id=2&action_type_id=2&item_id=AA961134

http://www.uniondiamond.com/diamonds/diamonds.php?mod=search&search_type_id=2&action_type_id=2&item_id=AA931190

http://www.uniondiamond.com/diamonds/diamonds.php?mod=search&search_type_id=2&action_type_id=2&item_id=AA964632

basically - is this a decent / respectable stone?
thank you again!!
- AB