Sovteks and JJ's - meh, OK for the price I guess. nothing special. Prefer the JJ's if I had to choose between these 2.
TAD - Sounded pretty good, but only lasted about 5 minutes in a fixed biased JCA22H I tried them in. YMMV but I'll pass on buying these again.
Mullard re-issue - sound great but less headroom. Not what you said you are looking for. I use these in an 18watt Plexi / TMB thing I built. Killer cruchy plexi tones for classic rock.
TS preferred series - best sounding EL84 I've tried, though the Mullard is close, but these have more headroom. Bullet proof. Using these in the JCA22H and Vox AC30. Best sounding tube I've tried in the Vox, and I want the headroom in the JCA22H. The JCA is modded into a mini SLO, and is fixed bias, so I want a tough tube that stays clean as long as possible because all the distortion is coming from the preamp. These fit the bill.