A also hope to get into larger apartment complex.   

From my experience and everyone I know and any data I have seen, it has been much more than that.

Over the years, I have found that if you have a clear data model (ideally 'implemented' in MySQL for instance) your success rate(s) for all other functions (UI, processing functions, interfaces, etc.) goes up dramatically.

I have used a company called www.listsource.Com it's a part of data quick it's first American title company's data base names and addresses should be 20 cents per.  

As to future, Texas A&M has some great resources for Texas investors at http://recenter.tamu.edu/They have lots of data that may help you guess at what will happen to property values and thus the taxes that are based on them.

I've sought help from people living in HOAs in the City-Data Forum but have yet to receive a reply. 

I keep hearing from some people investing in multi unit or complexes for cashflow and appreciation.

All of the geographic data you gave me was great.

We have a condo in Santa Maria and the complex is managed by Goetz Manderley.They have done a decent job:  http://www.goetzmanderley.com/index.php?

I currently live in the Akron, Cleveland Ohio area and now I'm looking for multifamily complexes in these areas.