Since many years I am a user of Plone, since version 2. I think it was back in 2003. I once installed Plone 4.1 with more than 100 add-on components. The quality of Plone out-of-the-box was allways very high. I had more issues with the add-ons...
I love the evolution to Plone 5 with the smashing new GUI. I just installed 5.0rc1 and found it really nice. Yes some nasty GUI bugs are visible and should not be there as it gives a false picture about the quality. The number of bugs listen here however gives me the impression that the current release date is set too early.
This might be true or false. I cannot judge that properly. I do understand that Andreas is really worried. When you release version 5.0 then please make sure that the most obvious bugs have been solved. And make sure that version 5.0.1 is planned shortly after version 5.0. Get it fast to a high quality level, which we all expect from a product like Plone...
Additionally: yesterday 11-9-2015 I installed Ploneintranet development version which comes with Plone 5.0b4 and I replaced that with Plone 5.0rc1. All worked fine. I got only 1 bug in the test suite. It shows that Plone 5 is allready very well on its way.
I want to give compliments for both teams: the Plone 5 team and the Ploneintranet team. Two wonderfull solutions.
I am working for Europe's largest IT company and recently introduced Plone 4.3 which is now very succesfully used as an Intranet solution including PloneBooking (Yes I managed to get that working properly!). I use a setup with HAproxy. Ningx and Varnish (Solr is used as option and further some other nice add-ons like the Document Viewer).
I use Plone 4.3 also for a very small student start-up company in Ethiopia (vpelectricalpower.com. This is running on 4MB memory on a VM with Ubuntu in the cloud including Zimbra and Piwik ,HAproxy. Ningx and Varnish. OpenLDAP... Yes I know all very minimal, but enough for a start-up with a very small walllet... however all is working fine for them and I didit for free for them :-).
I have evaluated Joomla, Drupal and plenty of other open source (CMS) systems the last 15 years, but it is really Plone that offers highest quality with an extreme flexibility to integrate it with other solutions.
Therefore: Thank you and well done!!. Keep the quality high, but excellerate as well as competition is stiff. I do have great expectations from the Ploneintranet solution and of course from Plone 5!