Search for Fancy Yellow Diamond

I have been searching for a fancy yellow diamond for more than a year and the more that I look, the more confused that I am. I have observed the following:

1) There is a wide price range. The stones are a lot cheaper w/o GIA cert; however, their color origin can't be verified. Some stones, even with GIA cert, are verified for color only. No clarity was included.
2) The shapes are predominant radiant. I looked at some round, oval and cushion and the color always look funny or not saturated.
3) Natural Fancy Yellow are really not that yellow. Some stones are so pale that I don't even understand why they are classifed as Fancies. Some stones look yellow at face up and washed off on the side or when you tilt up. The only intensive yellow that I found was from Tiffany's, 1.45 cts at $45,000, total ripoff.
4) The stones are always cut very deep. They said the cut is different for fancy color diamond in order to enhance the color.

I came across recently two stones that I like. Stone A and Stone B compared as follows:

Stone A Stone B
GIA Cert Fancy Yellow Fancy Yellow
GIA Cert VVS1 N/A
Carat 2.22 3.01
Length 8.66 mm 9.06 mm
Width 6.09 mm 7.03
Depth % 4.52 mm 4.57 mm
L/D 1.42 1.29
Depth % 74.2% 65%
Table % 66% 65%
Girdle thick N/A
Polish Good N/A
Symmetry Good N/A
Price 7,000 15,500

Both stones faced up yellow on top, side and bottom. Both sparkles. The concern that I have on stone A is it is cut very deep, the dimension does not compare well the Dave Atlas's guide charts for radiant. The stone looks very small, much smaller than my 2.0 ct RB. Also, I don't particularly like the high L/D since I don't know what setting would be good for it. I guess size is the big concern. Stone B faces up good for a 3 carat but does not have clarity certificated in the GIA. I did not notice any flaws in the stone but it is probably due to my lack of experience. I used my caliper to verify the dimension and found that both lenght and width are off by as much as .04 mm. The caliper that I used was the precision type that I used at my work and stone A checked out perfect with it. I am wondering if .04 mm is within the toloerance of measurement. Need some feedback on that. I also bought my diamond/moissanites tester during my diamond excusion and both stones tested out to be diamonds.

I have probably become a skeptic due to all the unpleasant experiences that I had before. Need some help on the standard guideline on cut w.r.t. fancy colored diamond and assessment on these two stones.

I had searched the icestore since they carry a lot of fancy yellow diamonds. However, I am not yet comfortable about buying a diamond, especially a colored one on line since I've seen the vast variations of color among stones.