Hello to you,
I can totally sympathise with your confusion / frustrations in finding the right AV equipment stand.
I myself have come to the conclusion that I will be having mine made to measure, although this will cost quite a lot, I know that it will truly be tailored to my requirments.
Not sure what budget you are looking at, but you could look at the following site and see what you think.
This is where I will be having my AV supports made, so I hope that you will be inspired by their designs.
All are one off's, i.e made to order
Hold the Music
I genuinely hope this helps in some small way
Honest regards from a stranger.