Amiga OS4 is hobby OS, so do not judge other hobbies. OS4 is direct decendant of Amiga OS3, it based to it source code. It has very same feeling than OS 3.9 had.
I have Sam 440ep Flex 800mhz, I bought it because I get it very tempting price. I was prety sure that I couldn't use it for anything, mostly because of people of amiga.org. Little machine was a very big surprice when noticed that it is very ueasble for some basic tasks like web browsin and watching PAL quality avis.