B4A: 9.5/10 - A real mature and RAD product
B4J: 9.5/10 - Despite it's young age, it's a very promising product, despite of some lacks (example SOAP implementation for web services, still needed in corporate businesses...), B4J is a great tool for creating xplatform and servers apps (it includes Jetty, but no way for Tomcat...)
B4i : 8++/10 , most of iPhone users have the last device and the last iOS version (compared to the Android smartphone world), B4i must be very quick to implement Apple new features like finger print, force touche, Siri and mainly Swift etc... I know, it's hard, but it's necessary
B4R : no vote, no need so far, C is easy for Arduino, but B4R is a real plus
we need a real B4W, W not for MS Windows but for Web apps, ABmaterial gives us a lot, a very lot, but I think, we really need that, mainly in the Javascript and jQuery world....(there are lots of frameworks coming on, more and more: Node, Angular, React...)
Anyway, Erel is a kind of genius for those wonderful products, 10K and more thanks and all my respect for him, his work and involvement in terms of creativity, support, help, tutos, new ideas in our B4X community, a very big thank you for your passion in this adventure
Long life for B4X, and Cheers Erel, you really deserve it!!!!
Patrick