Amiga-C64: Amiga died that sate, when it is a semi modern computer. (Severelal expansion option, for example new CPU, HDD-s, Modern Graphical OS, Video Card etc.) C64 never reach this state.
So the most of the amiga fans had a view that his/her computer can be beat any PC in performance. This is slowly died somewhere in 2000-2001, when there is no new serious hardware for amiga. (For example a new cpu card which is running 1GHz or more, etc) But every amiga fan still looking for this, because it is possible...
AROS: Interesting toy, but I think I will never use it. If i use pc, I will use xp. Maybe than, when it has a tons of software.