EL34 SED, Black Sable or Genelex Gold Lion?


I am currently using the new production EL34 SED, bought from tubedepot.com, and are very pleased with the result in my Manley Snappers. However, I am curious and still searching after new constellations of tubes in my amps. It is part of the fun. And here is my question:

Have anyone compared the EL34 SED with the Black Sable edition of the same tube?

And, how is EL34 Black Sable compared to the Genalex Gold Lion KT77? (almost the same price)

Any experience with these tubes?
128x128musicophile
If the Black Sable is just the Cryo'd version it ain't worth the cost over the stock SED..The cryo'd version is a touch warmer and less transparent ( in my Thor Mono's ) and at twice the cost...I'll stick with the Stock SED El34.
Thorman: it is valueable that you write down your experience with Black Sable. It gives me some perspective on a rather expensive tube.
Musicophile;
My eperience ( my system ) with the SED Cryo'd El34 is that they do not sound the same ( or as good ) as the stock SED El34..Point being they sound warmer ( quite a bit ) and not quite as much air..If you need more warmth,thats a different story,but if you systems tone is where you want it, the Cryo'd El34 would not worth the extra fee.. Some tubes do sound better after Cryo treatment but my experiance the SED El 34 isn't one of them..Keep in mind this is to my ears and my system..

System:
Thor Audio T1000mk2 Linestage W/Mundorf Cap Upgrade.
Thor Audio TPA 30 Monoblocks