Browser Automation Studio (in bundle with the other product, masstunneller) basically solved all my marketing automation needs and also all my huge proxy needs (without any recurring fee or cost).
Much powerful, more flexible, easy to learn, with a builtin tool for visually create complex conditions and loop without any coding skill. Native IPV6 support (unlike zenno and ubot that desn't s support ipv6) and fair superior browser fingerprint switching (resollution, language, headers, everything) to make each thread appear unique.
Right now between Browser Automation studio and ubot/zenno there is really no match, is like Maywheater against McGregor.
Least but not last, you get all the automation suite for free, and for Masstunneller (if you need lot of proxy's) you pay just 120$ one time, and all the proxy needs are solved forever.
Only negative point actually is the lack of english detailed tutorials (expecially about the strongest tool, the visual constructor for IF conditions and the advanced string parsing), but the developer seem to be working to add more video tutorials.