I personally found the reissue GL to be fantastic in my Jadis DA-60. The Chinese tubes I had in another amp were thin and lacked definition simply no comparison. I am an unabashed fan of the Reissue and highly recommend it. BTW the input and driver tubes in the Jadis are rolled without any diminution of the KT-88s quality.
GEC KT88 single-getter vs. triple-getter tubes
I recently received a Unison Research Sinfonia integrated amplifier and tried various tubes with it. As output tubes, I tried three-getter GEC KT-88 tubes which are great but I felt that they are overblown and rather fat sounding and lack air and HF extension. The stock tubes (Sovtek KT-88 marked "Unison Research") and somewhat lighter and brighter in a good sense and I thought I would keep them as output tubes, until I inserted the earlier vintage single-getter Genalex KT-88 tubes, which have more high frequency extension and transparency and don't have such excessive "bloom" I was suffering from. Has anyone had similar experience with these two varieties of GEC tubes? I will also appreciate any tips about a reliable source of NOS/NIB GEC/Genalex KT-88 tubes.