You are exactly right.  Build whatever YOU want,   Everyone's ears are different.  We may each like a slightly different sound.  I have friends who can not tell the difference between a 128 mp3 and a Flac of the same song.  Or the difference between some cheap bookshelf speaker system and some...

Well, I am not going to start a new argument about the benefits of the 3channel layout, there has been plenty of that in the past.  Needless to say, I have 6 boards ordered.  My plan was to start with a 2 board, single power supply build, and then to build 2 more boards for a balanced build. ...

I second anything from AMB.  I have only built one of his boards, but It was very well designed, and I am in fact in the process of buying boards and components for a B22 build.   If I may suggest, if you are looking at a O2 kit, go over to the DIY Audio forums.  They have a thread that goes...