Has anyone tried the Coincident Dynamo 34SE

Ya Dennis Had is the real deal and does this for passion only at this point. You can contact him through his Ebay ad and ask questions.
You have some great choices it seems.

Has anyone tried one of these as yet?

I noticed Dick Olsher had one in his 'Associated Equipment List" when he was reviewing the AVA FET Valve CF preamp .. so maybe a review in progress?

Ken Kessler also mentioned his experience here ..

http://www.soundstagehifi.com/index.php/international/soundstage-uk/662-nothin-against-china-but

Any updates.? Or comparison to the Decware 34.1ss?

I can't compare it to the Decware 34.1ss, but I did purchase the Dynamo 34se, which is phenomenal. So far I've tube rolled the rectifier tube to Mullard late 60s 5AR4, plus Sylvania JAN 6SL7 WGT, EL34s from stock Shuguang (sounded good) to RFT Siemens, Gold Lion KT77s, and now, Shuguang Black Treasure 6CA7s (still breaking in) but I can already say they are the best of this grouping. The Black Treasure has a long break-in period (200 hrs) and over the past two days they have really opened up and are beginning to sound fabulous. The stage in my 14x16 room is wall-to-wall, deep beyond the back wall. Instrumental tone is beautiful, well saturated, full, accurate, detailed, clear. A small edge on violins and horns have disappeared. This tube amp, with the tubes I have used is neither too Yin or Yang, just right for me, it has the best tube amp attributes as well as never being fatiguing, with the surprising quality, too me, of being very dynamic. This amp plays everything well, large classical, chamber, Jazz, modern as well as big band, rock folk, you name it, it plays it wonderfully.

I' ve owned many top-notch systems, yet this small Dynamo is special.