This article highlights current salaries and growth within the top markets along with the highest paying skill-sets currently. For specific information regarding what your average salary is for your skill-set glassdoor can be a good resource.
This article showcases some trends for hiring with technology and outlines some moves that companies are taking to attract and retain talent. While we all know Seattle is a hot market for hiring within technology it also talks about how competitive it is from skills-set to target salaries for individuals.
Geekwire is a locally based news site that is focused on technology. They are a great resource to find current up to date trends and information from start ups to Fortune 100 companies within the northwest.
This is a fantastic article on why to never accept a counter offer. While it can be comfortable to stay within your current environment things will not change long term and you will find yourself in the same situation. Do yourself a favor before considering accepting a counter offer and just google "counter offer" as there are several good sources and real life examples.