Popular and/or Recommended Themes for Elgg 1.12?

What are popular and/or recommended themes for Elgg 1.12?

Here are "Possible Desired features" I am open to hearing feedback and critique.

Desktop

- a header, with menu items, that remains in view, and consistent, when a user scrolls up or down, and when a user "moves around" a page, and throughout the site (similar to nytimes.com)

Mobile Device

- responsive; "looks good" and "functions well and easily" on mobile devices (including headers and footers)

- possibly, a "pinch zoom" option for users, (ideally not needed, but sometimes useful for expanding hard to read text, etc.,)