rank of H&A diamonds

[icehunter]

I''ve recently seen several HOF diamonds at my local jeweler and I compared against a lazare kaplan, and could tell a noticable difference in quality. Now on the net, I see there are plenty of other comparable diamond cutters. can anyone give quality ranks of the following h&a diamonds, or others?
amore
8*
hof
aca
superbcert
???

my particular search:
.8 -> 1.0 crt, id pol & symm, D-F color, VVS2 round of course. 5.8k -> 6.5k