Looks like CTS-XHP has slowly pulled away from Elmax (with a huge drop-off from there to any of the other choices), so I'm going to call this one as well. The winner, with a plurality of 25 votes out of 64, is CTS-XHP.
Full results are as follows (total votes = 64):
CPM-S30V 5 7.81%
CPM-S35VN 3 4.69%
154CM (or, if possible, CPM-154 - the PM version of 154CM) 4 6.25%
Elmax 20 31.25%
CTS-XHP 25 39.06%
Any of these is fine/defer to the expertise of others 7 10.94%
Update: The new blade steel poll thread is up. I'm going to close this thread to avoid confusion and so that any further discussion of the blade steel for the knife will take place in the new poll thread and in the main discussion thread.