My latest build is 5e9a, get the switched pot(ebay) or put in a toggle switch for the term or you won't be able to turn it off completely. That said, I just bypassed the switch and wired it like 5g9 with my build and the term is always there even when you turn the knob all the way down but not enough to be a problem in the live situation so I left it like that.
The (not so)clean & overdriven tone of the 5e9a is really pleasing to my ears.
The trem of 5g9 is to die for and some more power from a fixed bias is a lot more useful than cathode in live situation (talking about 2 6v6s here).
Now, only if these two amps could have a baby...