Well after reading everything I can lay my hands on relating to Pass I had pretty much decided on a pair of XA60.8’s. That is until I spoke again to Mark at Reno Hifi and Kent at Pass who BOTH steered me away from the XA series and toward an X150.8. This was not a "gentle" steering that was a rather opinionated steering toward the X series. I’ve never had a retailer before talk me out of spending $10K in favor spending $5K but that what Reno did and also what Kent at Pass did. NOW, I like the idea of a slightly softer, highly dimensional liquid tube like sound and that’s why I was considering the XA series. But both Kent and Mark seemed to think that the X series was the better match for Thiels. I’m a little stunned but I think I’m going to follow their advice and try an X150.8. Anyone else with opinions on the matter please chime in. They did clarify one thing: that if you DO go with the XA series they both though the 60.8 would be right amp in the series for Thiel 2.4s. In the X series, they favored the X150.8. I realize all this sounds quite odd because most of you are saying just LISTEN and see what you like best. Well there's no Pass dealer within even a reasonable driving distance of Atlanta so that's not possible. Yes I COULD order both an x150.8 and a pair of XA 60.8s and return the ones I don't like but we're talking $200 in shipping for each amp, each way so that ads up in a hurray. Still..... might actually do it.