What did James Carville say? it's like "dragging a $100 bill through a Trailer Park
I have never understood the thought process behind this type of Thread. Throwing a number like $30K out there on a public forum will generate a lot of activity. I suppose it is a form of due diligence, but really all it produces is a lot of contradictory subjective information from pseudo experts that can make a purchase decision even harder. For me, sound is like beauty, taste, smell or any other sensory judgment. Sure there is a lot of science behind sound reproduction and acoustics but in the end, it all comes down to personal taste.
You can do what I did which was the trial and error method. It took me several years to determine my priorities and then implement those priorities. I chose a DIY approach and over the years, I spent well beyond your budget to get to a sound that pleases me. With your budget flexibility, you may be better off paying an expert (there are some good ones like Keith Yates) to help you create a sound in your space that pleases you. You will need an overall budget of 2 or 3X the speaker budget but the advantage is you will have someone to hold accountable.
That is my $.02 and I think that is a realistic value for the information.