Speaker companies with a focus on parts quality and measurements

If you like the Maggie sound, then the Vandersteen line should be to your liking. You can definitely score a pair of used VSM's or Bookshelf speakers for your price range, though I would pair them with a decent (Vandy, HSU, REL, JL) sub for optimum reproduction. 
The Zu are a bit more 'direct', so they may not be your 'cuppa'. The nice thing is you can try them for a month and send them back if you don't like them.
Can you tell us what you are using for amp/pre/source? It would help in narrowing down what will work for you.
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PMC DB1+ here on the 'gon. Two mains and a single for a center. $999

+1 @keithtexas I have currently the PMC DB1i and they are the speakers I enjoy most from everything I owned previously (MA GX50, Neat Motive 3, SA 705, Epos, Quad 11L)

OP have you heard the Ascend Acoustic Sierra 2? if so what do you think of them?

To answer your original question about "public measurements", besides the two companies you already know about, the only other I know of that does that is Salk.

Toole and Olive’s philosophy at Harman is that people prefer flat FR, so between their designs and DBT process, Revels usually measure very flat. As do PSB. Many studio monitors (i.e. Mackie HR) measure very flat. Technics’ new bookshelves measure fairly flat up to 7kHz and their off-axis graph is very good (Stereophile - Class A 2016). Only handle 50 watts though.

Stereophile and SoundStageNetwork show the FR graphs of many of the speakers recommended above as being all over the place. On- and off-axis smoothness is one of the key features I look for in cone speakers. But then again, some people prefer a colored sound. However, my philosophy is that if you start from flat you can more easily tweak the EQ to suit your needs.