Wildcard Q/A

[AF]

I have a wildcard A record setup and pointed to my web server.. for
example:

*.bar.com. IN A 1.1.1.1

The web site on this server responds to any request and builds the
pages based on their URL (foo.bar.com, me.bar.com, etc.)

I can also setup CNAMEs to do the same.. for example:
*.foo.com. IN CNAME *.bar.com.

This gives different pages & URLs too (abc.foo.com, def.foo.com, etc.)

Is there a preferred way to manage that first wildcard? Why should I
*not* do this? I have read mixed reviews about its use. Really, could
I just have a regular A record (www.bar.com. IN A 1.1.1.1) and then
have the wildcard CNAME pointed to it? Same end result?

Thanks All.