Here is the list of some of the sites we visit and recommend you to visit.

Androidopinions.com is an android opinion and news website catering to exclusive Android tablet and phone updates.
Slate review slatereview Latest tablet and slate reviews.
Ipadnn Ipadnn Apple Ipad news and reviews.
Galaxy Phone http://galaxy-phone.net/ Samsung galaxy phone blog and news. Detailed specs and reviews of phones can be found here.
Ultrabook Wikipedia http://ultra-book.co/ Find everything about ultrabooks here.
Netbooknes Gadget reviews and news.
Notebooksnews http://notebooksnews.com/ Find latest notebook news and reviews here.