Facebook Pages Vs. Groups

In preparing an upcoming presentation for a client I found myself leafing through notes and google searches to get an exhaustive list of the different between Facebook Pages and Groups (I know the general difference, but wanted to make sure I was 100% prepared to answer all the ins outs of each, and always like to check in on the latest happenings at evolving beast that is Facebook). Here are two great posts that outline the differences between the two, if you've found yourself wondering which is best for you organization/cause/business:

• Search Engine Journal's post includes a comparison table that is handy dandy. I would point out, however, that while it is true you can "message all members" with both as they say, there is a notable difference between messaging your Page's fans vs. your Group members. With the former, the message goes out in the form of an "update" which can be easily ignored by users (if I'm any indication, they can in fact be routinely ignored). The latter, offers direct inbox sending options, though only for groups under 1,200 members (or perhaps 5,000 I've found conflicting info on that number).
• Advergirl's post lists out the pros and cons of each, playing champion and devil's advocate for both options.

The summary seems to be that for a long standing, more engaged approach with a community you want a Page, not a Group, but check out the comparisons and decide for yourself.

(As a side note, you can turn an existing Facebook Group into a Page, but you need to be the admin contact for the original group, and you need to contact Facebook directly to do it. No sense of what the ETA on turn around time for that is).