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Low plate resistance vs. reputation for 'good tone".

Posted by Iczerman on November 16, 2010 at 11:15:45:
ECC99 vs. 6sn7.

I could utilize both for driver duties in my 2a3 amplifier.
Both will be biased at -4 volts. ( got a good preamp)
Mu of both is 20. Supply voltage for both will be ~140v.
Plates in parallel in ecc99 RP is 1.15k ohms.
Plates in parallel in 6sn7 is apporox 3.75K ohms.

6sn7 has a reputaion for "good tone". Plenty of NOS to choose from.

Ecc99..er....not that much. Not that many....um..only 1(?).

Which would be the best choice?