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Theme Stores
http://themeforest.net/ - Very large collection, well organized.
Reviewing
Nice Black and White - http://themeforest.net/item/haze-beautiful-wordpress-theme/2485338?ref=deliciousthemes&ref=deliciousthemes&clickthrough_id=88286930&redirect_back=true
Look and Feel = Great, limited to light or dark
Layout = Clean
Gallery = Yes, multiple
Menu = Drop Down
Cost = $40
Mobile Support = ?
Reading
Theme Reviews - http://www.ourtuts.com/best-wordpress-themes-june-2012/
Another good review - http://www.ourtuts.com/35-incredible-wordpress-themes-of-september-2012/