Alternatve/more UV unwrap tools

Looking for better/more UV unwrapping tools, through plugins or anything I am missing.

Unwrapping not so complicated geometry when using the usual ‘e’ to unwrap is giving distorted UV’s and I am not seeing any tools to help remove the distortions, such as relaxing the faces to approximate sizes.

The image below is an example of a section of my mesh. Just looking for a tool to relax out the inconsistencies.