We tested these 2 variants. Result: The bottom landing page consistently outperformed the top one, by almost 90%. The bottom one generated almost twice as many leads as the top one.
The results are somewhat counterintuitive because we initially had a theory that the appearance of top brand logos and testimonials will generate more sign-ups. It turns out that most probably, the clutter actually got visitors distracted from actually filling the form!
Every online business should have a discipline of testing their landing pages because no matter what experts advise, there just might be something with your visitors, your product or your design that leads to results contrary to expectations.