Differences of few tubes EF95

I get the opportunity to do some test tube EF95.This tube to replace my standar driver tube in Little Dot MKIII, RCA 5654. I test tube from:
1. GE 5654
2. Siemens 5645
3. RSD Germany EF95
4. RCA USA 5654
5. Sylvania 5654
6. Ultron 6AK5
7. Electron tube 5646
8. Mullard CV850

All tube are NOS and matched pair. My testing rig are :
CD Transport : Macbook
USB DAC : Fubar II Upgrade
Headamp : Little Dot MKIII upgrade
Headphone : AKG 501

After i testing all tube, my conclusion is Mullar CV850 and Electron tube 5654 is the best. To detail from the testing i will post soon.