XSMP comes in several editions: Repo, Professional and Studio.
I use Sigershaders V-Ray Material Presets Pro in my daily pipeline and I really enjoy this great plug-in because let me have a high quality library ready at any moment to use in my projects and where I can add my custom materials to have all organized!
Simply put, Material Presets Pro by Siger Studio is a must. The quality it allows us to produce and the time it saves us has been brilliant to the point where it is now essential to our workflow.
We use the VMPP in our company. It’s very easy to use it, all the materials are nicely set, renders looks great with VMPP! I’d definitelly recommend it!
This is by far the best out of the box V-Ray materials ever! Love it. I use VMPPmax on every project.
Sigershaders are fantastic, they make look dev very easy with their pre-made materials and the textures they supply are of an amazing quality. The software provided is very useful and the plug-ins that come with the newest version definitely add to the realism of the shaders.
Siger Studio has greatly helped my workflow with VMPPmax!! The time saved tweaking materials has allowed me to take on more projects that I normally would not be able fit in my work schedule.