I have tried a few map extensions that make use of Google Maps API and I can say without a doubt Phoca Maps is the best one. Phoca have really though through the implementation of Phoca Maps to make it as easy as possible for you to have maps on your site.
Tabs & Slides is a quick way to take very long content and make it much more presentable. The way Tabs & Slides are implemented with tags in the content allows you focus on the content and then split it accordingly.
JCE has been part of my Joomla toolkit for a few years. The annual subscription is excellent value for money. If your site is about content and you are serious about presenting it accordingly, JCE is a must have.