Transformers Back to back vs. Voltage Doubler

Hi all,

I am designing a preamp and have a few options to achieve B+ of over 140v.
This will supply B+ power only...a separate supply will feed the heaters.
I'm planning to use either 1h4g, 6c5 or a 6y6 triode strapped for the tubes in a se circuit. I know the 6y6 is overkill for power but it sounds pretty impressive as a preamp in my system.

Now comes my options.
I have a self regulated Transformer (by SOLA) with 118V -128mA secondary- but buzzes slightly when under a load. Rectified it gives me about B+ of 146 with a 5k load... Voltage doubler circuit yields 275V
Though -I don't like the buzzing and I'm not sure if it will last long.

The other is Back to back transformers. 115V - 12 secondary -12Vsecondary to 115V primary...this yields the same as above with a very faint buzz coming from the transformer. I have had one heat up quickly depending on the load.

The third option is one I haven't used in the circuit...but I wired it up successfully. A voltage doubler for a 115primary - 59Vsecondary. This yields 150 under a 5k load. the transformer has higher amperage and no sound coming from the transformer when under load.

What advantage would the Back to back have over the Voltage double and vice versa?

Any advice or comments are welcome
Thanks

Roger