Help needed

Hi... I'm in the process of trying to find a renderer for my extension and some garden walls and I am getting so confused as to what to do as had 4 different companies and all 4 are telling me different for what render to use. So far I've been told Fassa, Weber, JUB and Krend which from doing my research are all different systems. The company using JUB seemed to impress me the most yet I can't seem to find many reviews of the product.
Can anyone please help?