What speaker could safely be ordered without hearing it first?

You don’t give any info on your setup and price limits. 
 

there are many speaker brands that will reliably sound good but your room and equipment might not be optimal for them. 
 

Well known high end brands such as KEF, Magnepan, Quad, B&W, Focal, etc

are very reliable for great sound but each has its flavor of sound and differing room requirements. 
 

you won’t go wrong with any of these assuming you can give them the space they need.

You don’t give any info on your setup and price limits. 
 

there are many speaker brands that will reliably sound good but your room and equipment might not be optimal for them. 
 

Well known high end brands such as KEF, Magnepan, Quad, B&W, Focal, etc

are very reliable for great sound but each has its flavor of sound and differing room requirements. 
 

you won’t go wrong with any of these assuming you can give them the space and power they need.

I enjoy Klipsch Cornwall.. for more $ Tannoy Canterbury

Magico A1...  It's small but boy oh boy that little bookshelf speaker can belt it out.  It's spendy though, used around $5K or $6K with stands, new, add about +$3K to that.  On a more reasonable level, how about a Bowers & Wilkins 805 D3 or 804 D3 (D4 is the current gen), first or second generation Focal mini Utopia's, and lastly, Raidho - that's another bookshelf that is quite impressive.  But, where the rubber meets the road, you gotta go and listen to it.  Happy speaker hunting. 

Anything from Peter at PBN is always a winner. Absolutely amazing sounds all lines