Passlabs XA .5 vs Ayre MXR

Which amp is highly dependent on speaker match? Is it the XA160.5 or the MXR?

My experience with SS amps is that they are on the dry and cold side from reality. Since the XA100 is designed to be in the middle of SS and tube, do you find it tipping to the other side, being warmer and prettier than reality. Also do you have enough base in the music. I heard that the XA .5 series is a major improvement over the XA as well.

Steve, thank you for commenting on the CES. It would be nice if you could hook the MXR to SF Elipsa. Stereophile gave an average review for Elipsa, but my initial listening to this speaker is so positive that I tend to discount reviews out there.