If you do go for the Marinoni, head out to cloverdale. Cloverdale bikes is a small lbs run by the nicest irishman and his daughter, both who race and win, and have spent their lives cycling, who will spend a LOT of time fitting you and sending the correct measurements off to marinoni. Bike isnt complety custom built, but is sized to you.
More research ?
Well, you KNOW your gonna get buyers remorse unless you scour the city
My next bike will be built for me, not pulled off a rack, and all components will be ones I choose, not some marketing genius
With that in mind, and wanting to go to a smaller builder who most likely still has some semblance of quality control, the field narrows to only a few makers, and narrows even more to ones within my price range.
But there is always some gems of deals to be found. Like the one im riding now