How convert data from USMARC to MARCXML using MARC::Record and it's derivatives? MARC.pm vs. MARC::Record.pm

Hi.

I need help to get perl way to convert USMARC to MARCXML.


1. I found MARC::XML
http://search.cpan.org/~bbirth/MARC-XML-0.4/XML.pm
This  module seems to be able to convert MARC<=>XML


2. But in the tutorial for MARC::Record
http://search.cpan.org/~mikery/MARC-Record-2.0.0/lib/MARC/Doc/Tutorial.pod
I've read the "History of MARC on CPAN" and I've make conclusions:
 -  MARC.pm is dead, it is not supported;
 -  MARC::Record and it's derivatives (MARC::Batch, MARC::File)
    are supported and developed nowadays.

The question #1: Would it be right to develop my scripts with MARC.pm
and MARC::XML.pm,
                         or I should to develop only with MARC::Record

The question #2: If  I should to develop MARC::Record-based script,
                         can I easy convert from MARC to MARCXML,
                         or I've to write handler for each field I got
from MARC?

Thanks.

Dmitry