Possible duplicate of content_multigroup

Hi there.

This is a great -and much needed -module.

I'm open to correction on this, but there is a possible duplication of purpose with
content_multigroup module.
This module comes packaged with CCK, but omits an .info file deliberately, as it is still experimental.
The feature is discussed at
http://drupal.org/node/119102
including a mention of flexifield at http://drupal.org/node/119102#comment-952842

I've used that, with a few hiccups, mainly with filefield or imagefield files.

I've also used this module flexifield back in Drupal 5, again with a few hiccups.

So basically is there a different between the two?

Regards
Alan
PS I've noted the slew of modules you released in the last few days.
Impressive work - hopefully much of it will hit Drupal core.