gochurchgo
I can highly recommend the tube amplifiers and preamplifiers of Aric Audio, and I agree that a "Push Pull" configuration might best provide what you are looking for. Give Aric Kimball (owner of Aric Audio) a call, he builds 7 different amplifiers with several different topologies.
He's great to have a conversation with and get some feedback; and he makes killer hand built tube gear, I've got several of his pieces including an EL34 "Push Pull" that is extraordinary.