I have 805 D3's. I drive them with a clone Firstwatt M2x (from diyaudio.com) using the Ishikawa input stage (genuine Toshiba JFETs). For a pre, I use the Korn Nutube B1 (also from diyaudio.com). I use SoundID from Sonarworks for room correction, because my room is a very odd shape and forces me to have one speaker in a corner and the other not. Most of my listening is near field.
I have loved SET using a homemade 300B (from tubelab.com) driving Foster full range kits from Madisound. I loved SET so much, I will return to it when I have room for large horn speakers.
The sound from this current system has much of the depth and all of the imaging I loved from the SET. It lacks a touch of warmth; the kind of warmth that's so magical, it makes one forget they're missing an octave or two on the top and bottom :) However, this may be an avenue you wish to pursue with your speakers, as total cost will be under $3k and comes with the satisfaction of building it yourself.