Topband: Question - Best Freq for 160-M Mobile AM?

[Andrew.MacAllister at EmersonProcess.com]

Hi,
 
Although I've been a ham for over 35 years, I am new to 160. A number of hams in the Houston, TX area have been interested in trying some 160-M AM, both from home, mobile, daytime and evenings. Do you have any recommendations on a frequency to use? I have seen listings for 1925, 1945 and 1990. What say?
 
73 de Andy W5ACM
Houston, TX