Speaker recommendations 10 to 30k and no beryllium

All of these suggestions are beyond the reach of the “common man”. Why don’t you grab a pair of Forte III’s and call it a day. 

That's a huge price range.  That's like saying I am looking for a car between and Chevrolet and a Mercedes.  Which one would be best.

If you choose soft dome tweeter, they could destroy much easier than beryllium.  Ribbon would also be as fragile.

How old are your children?  Perhaps build a chicken wire fence around them or wait until they get older.

Hope this is a fun process for you.  I second the idea to narrow your options based on what your room is used for--and kid-friendliness.  Another consideration is the kind of look you want--in other words, do they dominate the space or do they also fit in with what else is around.  And, simply, do you like the way they look?  

If I were buying a speaker for your size of room, at your budget and assuming it's also used for other things, I'd buy the Harbeth 40.2s.  But that's just me--there are many good choices depending on what you like and the needs of your family.

I like the Sanders, Vandersteen, Legacy, Cube Audio, recommendations. All great, all different.

Also check into Genesis Audio, Maestro at the top of your price range.

Also check into Genesis Audio, Maestro at the top of your price range.

And check out the Focal Kanta 3 at the bottom ($13,000) of your range.

Really detailed and dynamic...

NEVER MIND! 

They use Beryllium!