Refinancing Mortgage Brokers - Who did you switch to and from?

OK so now Westpac and NAB have finally shown their hand. From highest to lowest, these are the standard variable rates: 

• Westpac increased theirs by 0.35% to 7.86%
• CBA started first with 0.45% increase to 7.81% 
• ANZ recently increased 0.39% to 7.80%
• NAB increased their standard variable rate by 0.43% to 7.67% 

There has been a lot of talk about getting mortgage brokers to help find a better deal so we'd like to hear where everyone has decided on moving their loans to and whether they have been successful in cutting a deal with one of the Big Four.