I'm not sure if Mutec got their USB version out yet, I'm using the MC-3+ Smart Clock with AES in to optical out. $700 off ebay I think. I haven't really compared it with anything else since it works 100% for me already :)
There's an interesting option of syncing to a 10M clock, but I don't think I'll try that, too expensive.
There's an interesting option of syncing to a 10M clock, but I don't think I'll try that, too expensive.