Bryston and Pass preamps...

Has anyone compared the two.A bp-25 to a X-1..
I went from a BP25 to an X1. The X1 is just more detailed and finer in all areas. I feel it is best to match your preamp with your amp though. It creates synergy. If you have a Bryston amp, go with the BP25. If you're changing both, go with the X1 for more quality sound at at much higher cost though.
Amp is Pass x600...The bryston is good.but was wondering how much better the x-1 whould be..
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You can buy my BP-26 when I'm dead.