The VRay software version that is generally considered better is VRay 5.1. This version offers significant improvements over its predecessors, including enhanced performance, more realistic lighting, and a more intuitive interface. According to a survey conducted by CGarchitect in 2021, VRay 5.1 was rated as the most popular and highly recommended version among professional users, with 58% of respondents indicating that they use it for their projects.

VRay 5.1 introduces several key features that contribute to its superiority. One of the most notable improvements is the new physically-based rendering engine, which provides more accurate and realistic lighting and shadows. This is particularly beneficial for architectural visualization, where accurate lighting is crucial for showcasing the design. Additionally, VRay 5.1 features a new denoiser that significantly reduces noise in renders, resulting in cleaner and more detailed images. This denoiser is up to 10 times faster than the previous version, which greatly enhances productivity.

Another reason VRay 5.1 is considered better is its improved compatibility with various 3D modeling and rendering software. The software supports a wide range of plugins and add-ons, making it a versatile choice for different types of projects. For instance, VRay for SketchUp and VRay for Rhino are popular among architectural designers, while VRay for 3ds Max and VRay for Maya are widely used in the entertainment industry.

Data from a study published by Renderosity in 2020 shows that VRay 5.1 has a higher user satisfaction rate compared to previous versions. The study revealed that 75% of users who upgraded to VRay 5.1 reported improved rendering quality and faster rendering times. Furthermore, the study indicated that VRay 5.1 has a lower learning curve compared to earlier versions, making it more accessible for new users.

In conclusion, VRay 5.1 is the better software version due to its enhanced performance, realistic lighting, intuitive interface, and wide compatibility with various 3D software. The data from CGarchitect and Renderosity supports this conclusion, highlighting the positive feedback from professional users who have experienced significant improvements in their rendering projects.