My ez brushes are on their way out after 4 years, the daytona speedmaster brushes also made by ez are red which would match my detailing tools better then the blue ez 

Are they the same performance and durability wise?

As i recall the Speedmaster metal stem was stronger/stiffer and less prone to the EZ snapping symptom over time.

That said - the Blue EZ range were also subsequently updated to improve reliability also.

 

Both good products though - no question.