One thing you may want to take into acount is the possibility to use Mathias ttl OEM converter (specially for macro strobes which are the ones you are looking for...) with your D2X then the list narrows a lot:
Hartenberger 125 HS TTL Digital
Hartenberger 250 HS TTL Digital
Hartenberger 625 HS TTL Digital
Inon D 2000W
Sea & Sea YS-60 TTL mod. Mike-Dive Speed-version of YS60 from www.mike-dive.de
Subtronic Maxi TTL
Subtronic Midi TTL
Subtronic Mini TTL '05 works with Nikon D100
Subtronic Nova
And MAYBE (not tried yet) Inon Z240