Primaluna Prologue or Primaluna Dialogue Preamp?

Hello,

Love these forums for getting advice from experienced users....

I have two Primaluna Dialogue HP amps I'm going to be using in monoblock setting. In keeping with the Primaluna theme, I'm debating if I should go with the Primaluna Dialogue Preamp or save a $1000 and go with the Primaluna Prologue Preamp?

Anyone got experience with both and have an opinion to share?

Thanks