Should I build on 6 or 7? (Drupal 7 Module Availability)

Below is a list of my favorite Drupal modules and their availability of a stable/recommended version for the Drupal 7 platform. I merely assembled this information based on data from Drupal.org and I cannot provide recommendations based on personal experience with any of the modules. Modules in red are currently not available for Drupal 7 in a “recommended” release as of today (7/7/2011).

Drupal Module Availability for Version 7 (as of 7/7/2011)
Module	Latest 6	Latest Recommended	Latest 7	Notes
Content Construction Kit (CCK)	6.x-2.9	6.x-2.9	7.x-2.x-dev	Most of CCK is in Drupal 7 core.
Views	6.x-2.12	7.x-3.0-rc1	7.x-3.0-rc1
ReCaptcha	6.x-1.7	7.x-1.7	7.x-1.7
Administration menu	6.x-1.8	7.x-3.0-rc1	7.x-3.0-rc1
Filefield	6.x-3.10	6.x-3.10	n/a (in 7 Core)
ImageField	6.x-3.10	6.x-3.10	n/a (in 7 Core)
Computed Field	6.x-1.0-beta5	6.x-1.0-beta5	7.x-1.x-dev
Email field	6.x-1.2	7.x-1.0-beta1	7.x-1.0-beta1
Link (field)	6.x-2.9	7.x-1.0-alpha3	7.x-1.0-alpha3
Content Templates (Contemplate)	6.x-1.2	7.x-1.0-alpha2	7.x-1.0-alpha2
Content Profile	6.x-1.0	6.x-1.0	n/a	Only partially replaced by Profile 2
Profile 2	n/a	7.x-1.0-beta4	7.x-1.0-beta4
MERCI	6.x-2.0-beta11	6.x-2.0-beta11	7.x-2.x-dev
Date	6.x-2.7	7.x-2.0-alpha3	7.x-2.0-alpha3	7.x does not require CCK
Messaging	6.x-2.4	6.x-2.4	7.x-1.0-alpha1
Notifications	6.x-2.3	6.x-2.3	7.x-1.0-alpha1
Subscriptions	6.x-1.4	6.x-1.4	7.x-1.0-alpha2
me aliases	6.x-2.9	6.x-2.9	7.x-1.0-beta2
Automatic Nodetitles	7.x-1.0	7.x-1.0	7.x-1.0
FCKeditor	6.x-2.1	6.x-2.1	deprecated
CKEditor	6.x-1.5	7.x-1.2	7.x-1.2
Iconizer	6.x-1.3	7.x-1.1	7.x-1.1
Login Destination	6.x-2.12	7.x-1.0-beta2	7.x-1.0-beta2
Pathauto	6.x-1.5	7.x-1.0-rc2	7.x-1.0-rc2
Revision Moderation	6.x-1.0-alpha2	6.x-1.0-alpha2		Not actively maintained
Search configuration	6.x-1.6	7.x-1.0	7.x-1.0
Search Restrict	6.x-1.3	6.x-1.3		Not actively maintained
Shibboleth authentication	6.x-4.0-rc6	7.x-4.0-rc3	7.x-4.0-rc3
String Overrides	6.x-1.8	7.x-1.8	7.x-1.8
Token	6.x-1.16	7.x-1.0-beta2	7.x-1.0-beta2
Transliteration	6.x-3.0	7.x-3.0-alpha1	7.x-3.0-alpha1
User Protect	6.x-1.5	7.x-1.0	7.x-1.0
Webform	6.x-3.11	7.x-3.11	7.x-3.11
Panels	6.x-3.9	7.x-3.0-alpha3	7.x-3.0-alpha3
Rules	6.x-1.4	7.x-2.0-beta2	7.x-2.0-beta2
Google Analytics	6.x-3.3	7.x-1.2	7.x-1.2

I should add that I have not made the plunge for any of the production sites that I am building. For now, I continue to recommend Drupal 6 for new client sites.