Who are your favorite custom amp builders for low powered triode amps?

The custom builder of my linestage and power amp builds gear based on old Western Electric gear.  He utilizes a lot of vintage parts in his builds.  While he has done 300b triode amps, most of his builds are low-powered pentode amps.  His name is Aldo D'Urso and he lives in Italy.  

My pushpull amp is a rebuilt version of a Western Electric 133A amp.  It utilizes original Western Electric input transformers and output transformers and vintage paper in oil caps and vintage resistors.  The power transformer and choke are modern parts.  The input/driver tubes are Western Electric 348A tubes (four of them) and the output tubes are 349A (four of them in a stereo amp).  The use of input transformers mean that the amp is best used with a linestage with complementary output transformers.  This pushpull amp puts a whopping 5.5 wpc.

My linestage utilizes such output transformers as well as input transformers (all Western Electric iron).  The linestage runs Western Electric 310 A and 348A tubes.  It is NOT a Western Electric replica in that it has remote control of volume.  

I have not heard Aric Audio or Don Sachs amplifiers, but, just what I've seen on their websites they do appear to be interesting builders.

There are a number of small builders that make good gear, e.g., Atmasphere, Lector, Synthesis, Shindo, but I don't know how much customization is involved.  The builder of my linestage, Aldo D'Urso, normally did not offer remote control of volume, but I wanted it so he built it that way.  I also specified balance control.  I wanted output transformers to match the input transformers on my amp ( I had choice of transformer output, capacitor output or a switchable choice of either).  I had choices on components used in the build; I chose the not-crazy-expensive Western Electric output transformer (I know another buyer who chose $20k output transformers in his linestage and battery power, and other high priced options).  I did not bother to specify anything about the chassis and cosmetics, so I ended up with "ugly," which I actually like.