What do some of you pros think of this strategy. In the study posted on this website, it seems to indicate that GIA generally (and I"m saying generally because I know it wasn''t so in all cases) grades 1 color stricter than EGL-USA. However, in many cases, an EGL stone of one color grade better still costs less than GIA certed. stones. What do you guys think about going EGL-USA, but one color grade better as a buying strategy (i.e. look for G-H stones from GIA but compare to F-G stones from EGL)?