To continue in a more serious direction.....
I did a lot of auditioning listening to at least 50 or 70 different speakers in many different stores and some of what I learned from this I will try to cover here.
Yes you need a big variety of music and what works you probably only can decide for yourself, some of the music that I find most revealing can be quite silent music with few instruments, could be things like Kate Bush, Tori Amos.... If you can stand this, that is
; this is extremely revealing and very hard for speakers to get correct, female voices and pianos probably tell you immediately if things are not right... some of the records from Leftfield are also exceedingly well made without any form of compression and if the system is up to it... will sound like something else. With Leftfield you will know if the sub 30Hz region is ok
Try the "Leftism" Album
I would very much look out for the imponator effect as what you're probably not looking for is the speakers that sound the most impressive; The impressive speakers quite often sound like this because they do have some sort of artificial imponator effect builtin (they're not linear or not natural sounding), this will be bad in the long run as any artificial coloring is not supposed to be there in the first place, in the end it will make you sell the speakers....
Quite often I find the best speakers to sound like "nothing at all" because they're just giving you whatever it gets... When I first auditioned the Duntech PCL-15's I was quite unimpressed as they sounded like nothing special at all, the treble was not there and I'm not sure I liked them....
Until suddenly the treble was there, light as snowflakes..... like a magic
I didn't like these speakers in the start; until I realized they're sensational because the response is flat as Kansas, they're absolutely phase/time coherent and give you out the signal exactly as it gets into the speakers... In the long run, this is what was right for me and probably the best thing I ever bought, it's magic and still.... they can't play loud and there's no lower bass at all
Products like this may not be correct for you but you should look out for these similar effects, I suggest.
So what do you need.... you need lots of lots of lots of time to audition over and over and over again and in the end.... settle for the speakers that mostly makes you enjoy the music and forget about the technique,
I think it's absolutely wrong and misleading to suggest that speakers should all be placed in the same place within the room, this depends on the speakers and different speakers have different tuning that makes them work optimal in different positioning within the room, for some speakers this may work out but as a general rule this is not necessarily correct. At least this is my experience with different speakers.
I would not switch quickly between speakers but at least listen to a few songs with a speaker, perhaps even much more to find how you enjoy this, and then later repeat this with other speakers.... it's surprising how your memory may recall signature of other speakers, even after a significant point in time
Quick switching between speakers is only gonna make you forget about what's important, namely the experience and listening pleasure, you will probably end up as a listening machine trying to look for technicalities that are different.... this is more about listening pleasure than technical differences.....
If speakers trick you to believe that you're listening to music and not electronics, then you're into something that may potentially make you happy in the long run....
And speakers can then be enjoyable.... even without cable risers or Ferrari red speaker cables
