Clocking with AES-16 & 2 x Lucid 88192

Hi, for some years I've been using my AES-16 with Panasonic/Ramsa converters, the WZ-DA96 and WA-AD96.  This setup has worked great but now I'm selling the Panasonics, upgrading and adding another 8 I/O.  I bought two Lucid 88192 converters for 16 in and 16 out.  What would be the preferred way of setting up the master clock in this configuration, and what are the pros and cons of having the card be the master vs the Lucid?

Also should I leave the jumpers on the AES card as they are (factory defaults) or is there any reason to change them to put 8 ins and 8 outs on each DB25 port instead of the default 4 I/O on each port?

One other question -- what type of improvements could I expect if I upgraded to the AES 16e card?

Thanks much!

I'm familiar with having the AES card be the master, but some have suggested that the sound is better letting the converters be master, and then using the synchro-lock on the AES-16