Those Fleetwood (and also OMA Audio) are
KILLER; congrats!
Thank you for sharing your opinions, and there is no right or wrong answers here as we all have unique things we look for.
I hope that the IEM path you have taken leads you closer to what you require musically and lifestyle choices.
The only thing I will say, in defence of the Solitaire T, is that I personally believe that, based specifically on their technological sonic engineering, the headphones could have been priced higher than current RRP. That is to say, I personally believe that they are worth the cost and more. However, I am looking at this through the lens of my subjective and objective minds eye, alongside what I consider value, and of course my needs.
It is a shame that the Solitaire T didn't fit your needs, but I do hope you continue to share your opinions of them, good and bad, to those who are looking at high-end wireless cans in the future, as these are valuable.