Hi,
It depends on your customer requirements.
If it's a big organization with Tb of data, I think it's wiser to take support.
If it's a small/medium organization with Mo of data, it's possible to take Community/Labs version.
Main difference between this 2 version are "Labs functionnality" like IMAP integration for 3.2 and Enterprise Tools for Clustering…
If you don't use this kind of features, I think you can use community.
Furthermore, it will be possible in future to migrate your community version to an Enterprise version.