Just because they're cheap doesn't mean they're crap. I rather like the sound of the Marshall-label EL34s from China. To my ear they sounded far better than the Svets, EHs or Sovtek EL34s in my old Laney. This is not to say I think they're the be-all and end all, but rather to point out that just because it's expensive doesn't mean it's good. And just because it's crap, it doesn't mean that it isn't EXACTLY the crap your amp needs to sound great.
In 12AX7 land I like the Tung Sol 12AX7s, and the Groove Tube 12AX7M and ECC83. The JJECC83s is the GT product without their premium (testing etc). I rather like the new Sovtek 12AX7WC, too. Nice valves all.
Good luck.