I faced a similar choice with IMAP modules, and went with
Net::IMAP because
it had the method I needed specifically for a simple biffer.
In your case, if
Mail::POP3Client has a method that
gets rid of a lot of your own code, it seems worth using.
In your topic post you said you wanted to delete headers, but
your approach seems error prone at best (what if you encounter a header
you didn't plan on). The Body method of Mail::POP3Client works
because it uses the structure of a message, not a list of known headers.
How about giving Mail::POP3Client another go? You can post
more questions or /msg me if you need help with specifics.