Suse has a good GUI for the installation and a pretty good hardware detection. When you use the default settings it provides a running system. The tools for fine tuning are easy to use. The entire configuration can be done with the configuration tools. Modern machines have enough memory to use KDE which provides several editors for editing the configuration files if you like. My installation on the 486 required the use of vi (which is an editor) as the machine doesnīt have enough RAM for KDE.
Firefox comes with an installer. For Windows itīs just start the installer and decide where you want it. For Linux it has to be unpacked and then started. Itīs no real hassle. 15 min for getting it running is rather pesimistic. The extensions can be downloaded via the menu Tools->Extensions. You have the choice to install immediately or download and install via File->Open File. I usually do the latter as I like to have the files for later installation and to save bandwith (I distribute the extensions to several machines).
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If it isnīt broken, it doesnīt have enough features yet.