I'm looking to add the google analytics code to my zen-cart installation.

Since I found 2 different locations on google,

"just before the closing </head> tag"
and

"after the opening <body> tag"
I started look at this forum for advice.

Since looking here, I've noticed some people are using mods available for download on this site.

My questions are:

1. Which location is best for the analytics code in a zen-cart install?

and

2. What is the difference between using a mod like Berezin's "Google Analytics Integration" and just the code google gives out ?

Thanks in Advance

~Dave D.