PS Audio BHK 300 mono VS Modwright KWA 150SE mono VS D'agostino Classic stereo


What would you consider the best option of these 3 to build a reference level system.
Any experience with these amps would be appreciated.
I'm also considering higher end gear but if budget does not allow i will stick to these 3 options.

Thieliste
128x128thieliste
I may have read a negative on this but can't find the post.  I am thinking of getting a pair of CS3.7s.  Would a high power class D ice or ncore amp with a tube pre fit the bill?  Or would it all end up too dry up top?
Thanks,
George
Answered this in the Thiel thread, but as it's more germane to this category, may I add a suggestion you pay special attention to the output impedance of the tube pre and the input impedance of the Class D amps your considering.
Unsound,
I understand your perspective. My essential point is that listening is the final arbiter and is of course guided by personal objectives and taste. This explains why one Thiel owner will insist that high power/current SS amplifiers are the only way to go.  Another owner will retort, "been there and done that,  tube amplifier was better for me".  It appears that Thiel owners have various routes to success. 
Charles 
If i was going to go the pure wattage route i would pick the D'agostino classic amp which doubles down all the way to 2 ohms and be done with any load problems.
But since this is not my vision of things i prefer to go quality watts and a lot of refinement.
I know most older Thiels are known to work best with big older Krells and so on but this is not my cup of thea.
The CS 3.7 are not as hard to drive as the 2.4s for exemple and i'm not even talking about the CS 6 and 7.2s.
I'll let you guys know my impressions with the Aelius ll.
I don't know anyone who has tried Ypsilon with Thiel speakers yet so that's going to be interesting.
All i can say for the moment is the best i've heard to date with the CS 3.7 are the Aesthetix Atlas mono Signature + Calypso Eclipse linestage.

Theiliste, I would read the Stereophile review of the Ypsilon and check out the measurements. I don’t know much about your Theils, but a demanding speaker does benefit from a doubling down of power down to 2 ohms. It can result in a more relaxed sound (maybe that’s less distortion created as the speaker's impedances goes low) that makes listening more enjoyable.

Of course, every system is different and the best way to decide is to listen in your home, so you’re good there. I would check out the Stereophile measurements though, and consider how this may apply to your speakers.