Thanks for the inputs!
It seems that X5 and DX90 (and DX100) should be able to drive the T1...
There is one alternative setup I am thinking of-- though not exactly apples to apples. I read about the HiFi m8 and I am thinking if I pair it with a cheap (but current) android phone, the cost would be similar to that of the DX100. The android would simply act as the screen, processor, and storage anyway and all the sound processing to the m8. I know it's not as portable, but thinking if the sound quality is much better, might as well get the m8.. The only other earpiece I would likely try to use it would be the Shure SE530...
Any thoughts? Admittedly, a big challenge for me is easy access to try these before committing to it thus my reliance on other people's experience.
Thanks again!
@Jobbing-- thanks for the welcome and yes, I am quickly realizing that the headset is just the first of many major expenses!