Simple why they aren't selling as well. No reviews on Stereofool or Absolute Fool.
Under $1500, tube amps that do well with 938 are http://www.mcalisteraudio.com (personal experience), http://www.pacificcreek.com (second hand info), and possibly http://www.angelfire.com/biz/bizzyb
McAlister amps sound very smooth, detailed, great bass, and very good soundstaging/imaging, but build quality is DIY like and reliability might be an issue.
Under $1500, tube amps that do well with 938 are http://www.mcalisteraudio.com (personal experience), http://www.pacificcreek.com (second hand info), and possibly http://www.angelfire.com/biz/bizzyb
McAlister amps sound very smooth, detailed, great bass, and very good soundstaging/imaging, but build quality is DIY like and reliability might be an issue.