I have a huge Migraine can you help?

Ok, I am trying to get educated really I am. My search is for a now dreaded Princess cut any wear from 0.50 to 0.60. I believe I am educated enough with Color, Carat, and Clarity. The problem started with this darn table for the princess cut. You all know this one -http://www.gemappraisers.com/chrt4.htm It has numbers on the top so I think I have it then of course it lists numbers right below it example box 1 68.1-71% then right below 61.9 to 60% what the heck? SO I find the aga charts and I am putting in all this info and I come to Crown height? Where o Where is this to be found so I can put it all in? Any way from what I can find through now 2 weeks of online searching is I can get a diamond in my $ range (1250 max) with specs like this-

0.50 H VVS1 70.8% 79% GIA xt-tk no gd gd no 4.46x4.45x3.15 $2312 $1156*SP
 
0.50 H VVS1 74.4% 73% GIA m no vg vg no 4.4x4.29x3.19 $2318 $1159*SP
 
0.50 H VVS1 74.8% 77% GIA m-tk no gd ex no 4.45x4.28x3.2 $2324 $1162*SP
 
0.50 H VVS1 70.8% 79% GIA xt-tk no gd gd no 4.46-4.45-3.15 $2388 $1194*
 
0.50 H VVS1 74.4% 73% GIA m no vg vg no 4.40-4.29-3.19 $2394 $1197*

0.55 H VVS2 Good 75.2%/
71% None 1.03 GIA $1,224.00

Again the 3 c's are easy but when you add the table and depth  for the princess I get fuzzy thinking and then the Migraine. Thanks for your kindness.

P.S. Specs My lady would like- Princess(of course) 0.50 and up H or better VS1 or better TY.

........... Karl has joined the diamond trade and is now posting as Karl_K

Ana "The greatest experts are only as good as the sum total of what they have seen." [Souren Melikian]

Valeria,

Thank you for the reply. 1st 0.50 or above is because she wants at least a half carat. Vs1 and H are what I would like as far as quality. Again the problem and the migraine happens when I go beyond those 3. I find a Diamond like this one -0.55, H, VVS2 Good 75.2%/
71% None 1.03 GIA $1,224.00

It looks good to me 1,200, H, VVS2 but then comes the dreaded table and depth and length to with all those goodies. I would try and use the charts but still do not know how to figure out the crown height? You asked is brilliance important to me? Well what is important to her is color and quality. If the stones I have listed are meeting that then I guess she would be happy. The problem still lies in the fact that I am not sure if having the "3" c's all where I want them makes a good princess, and if it does not what do I need to do to figure the rest out. Ok I need my Advil again!

(*•.¸(`*•.¸¸.•*´)¸.•*)
¨`•.¸ *belle*¸.• ´¨
(¸.•*(¸.•*´ `*•.¸)*•.¸)

Ana "The greatest experts are only as good as the sum total of what they have seen." [Souren Melikian]