External Clock Suggestions for PT HD rig? Lucid, Rosenthol???

Hello Guys -



Thanks in advance for your help and suggestions. I am in the process of migrating to PT HD setup. I need some suggestions on how to work out the clocking configuration with the 192 i/0 and the rest of my production setups.



Here is what im working with as far as PT is concerned.



Frontend

(2) Mackie D8b Mixers (currently slaving my 2nd d8b, and all other interfaces to the master D8b internal Apogee word clock).



PT HD Rig

Hackintosh i7 w/ OSX 10.7.5

PT 8HD

HD4 system (1 x pcix core, 1 x pcix accel, 2 x pcix process cards)

(3) 192 i/o analog frames (with 2 digital cards)

(3) 888/24 units



NOTE: I haven't turn "on" the Pro Tools portion yet, missing a digilink cable. So my chain stops at mixing console for now. [/I]



WORKFLOW: Sources >>> Mixer console >>>> Pro Tool HD rig >>>> Console for monitoring mixing >>>> Master input in PTHD



My questions are:

1. I want to replace the mackie d8b word clock signal with a better external word clock that can clock everything in my setups. I think i have been having issues with more than 2-3 devices on the d8b's word clock card.



I found this Rosenthol Nanosync and Lucid Genx 96 clock. I don't know anything about them...how do they compare to each other?



Are their any others (besides the big ben, that's in the sub $400 price range) that will do a better job that the Digidesign or D8b apogee clock?



2. If i do ad a external clock to the system...as far as wiring it to the HD system, how would that look with the 3 192 interfaces and the other non-protools gear i have in the studio?





Again, thanks for your advice!