Top 10 might be too much but so far only top 5 found without placing in particular order I'd like to finalize the following:
#1 from Hotmailjbc >>Forgetting to enjoy the music<<
#2 from Ahendler >>Listening to others opinions rather trusting your own ear<<
#3 from Schipo >>Thinking that paying more will give you better sound<<
#4 from Almarg >>Attributing sonic characteristics to components or cables that are in fact the result of INTERACTIONS between those components or cables and what they are connected to, and/or other parts of the system<<
#5 from Marakanetz >>Building system for a specific type of music<<