I haven't had the B2's for a while, sadly, but they are very top heavy from memory but not in a way I found offensive and are very detailed. I wasn't very impressed by their sonic presentation though from what I remember.
The BA200 might satisfy you with being very resolving, fast, and excellently separating, layering, and imaging, but the top end might be too laid back for you.
The GR07 is better than the HJE's in just about every way except maybe good upper mid presence. I fear that they may be a side grade and maybe even a downgrade for you if you really like the B2's. They are a bit less detailed and more laid back than the B2 from what I can remember but I found their less quantifiable attributes to be worth their weight in gold.
This may sound odd but while the top end or the GR07 might have more presence than the BA200 making it seem like it's close in sound to the B2, the way the BA200 sounds might be closer to the B2 in terms of note and detail presentation.
I hope that helps somewhat. If you can let us know what you like about the B2's and what you are looking for, I'm sure someone else or I can answer your questions more precisely.