I know I am preaching to the converted, but I wanted to say that I just tried Ubuntu (14.04) for the first time in about 8 years and I found it to be excellent:
- Presentation and polish
- Full screen use for applications.
- Enhanced application menu bars - LHS hidden menus, RHS major system functions
- Software manager.
- Dash - perfect for 95% of users.
Though an Arch Linux user myself, I will be recommending Ubuntu to almost everyone.