What speaker could safely be ordered without hearing it first?

This topic is kinda like target shooting w/a blindfold on. But here goes nothing. I see 2 generic possibilities:

1 - If speakers are to be located near the back wall: go for high quality sealed/acoustic suspension design. Easy pick of those: pretty much any of the ATCs. Even a stand mounted 2-way gives killer sound with great dynamics

2 - If speakers are located anywhere you want in the room, just go for high quality, period. Easy pick there would be a Harbeth 30.2 or 40.2. These need stand mounting but really don’t require subwoofer augmentation unless you want the absolute best deep bass.

(that’s my 2 cents)

@mtbiker29   This has happened to many of us.

When one with no experience admires a high performance something and reads a litany of positive accolades by users, not knowing they too are mostly first time fan boy users with little or no experience, who've found by providing a positive review somehow lessens their poor decision remorse.

A product sitting between your speakers is exactly that something.

People are taking the time to offer you overwhelming advise that, what your calling a frivolity, should to be avoided. 

Now that you got a ton of different recommendations, I hope this has made your search easier.  Here is the best advice, Narrow your search down to a few choice "Efficient" speakers. The key word is efficient because they more likely to reveal all the suttle details and don't require a ton of expensive power.

WAF.

Remember you will be looking at them a lot more than

listening to them. 

@m-db Can’t say I disagree. I am subscribed to my local classfields for vintage audio. It’s always a kick in the teeth when you spend thousands on speakers and you see very intriguing speakers for not much money. How about 90€ for Ruark Swordman II Plus speakers? With much discipline and patience you could build a serious setup under 300€. Granted, you’ll get 0 recognition from the “audiophile” community. It’s all just unwanted UK hear from the 2000s. These days Ruark Audio sells overpriced alarm radio alarm clocks. What a shame! 
 

It’s like a philosophy of buying the 12th best option for 1/20th the cost. And everything is pretty darn good. I wish I could rewind that clock a year or two. I would be 4k€ richer. Or have like 15 pairs of speakers and 5 amps. Just see what sticks.