Need speaker advice

It’s not all about efficiency.  A high and relatively stable impedance is also very important.  Proacs are not rated that high in efficiency but play well with low power amps.  The Cary 300 SEI always sounded great with 1SC’s.  Your near field listening position also works in your favor.  I’ve also heard the D20R sound great with a 12 wpc Leben and a Shindo amp, which I don’t recall the model designation.  So, I think Proac is worth your consideration.

Have you considered a more beefy amp? Classical and rock are both pretty demanding IMO.
Tektons are Really good rock speakers and are easy to drive but with 12 watts? Would probably sound fine at lower levels.
Yeah you are correct... big gamble and you are probably not going to be able to hear these smaller brands. On the other hand Tekton has made a huge splash at least in the US and if they didn’t work out I would think there are some other audio dudes in your country that would be happy to take them off your hands at a smaller loss than shipping them back.

Being in Sweden, you should totally order Tekton Moabs. First because they are fabulous. Absolutely unbeatable for anywhere near their asking price. Second because they are soon to undergo a price hike. They tried it once, even at $5k they are a stone bargain (nothing twice the price comes even close) and so you can count on them being priced higher, probably not long after you get yours. 

Then when you and your friends hear how much better they are than anything else you ever heard anywhere, you will realize not only are they not going back, but you can sell them for at least what you paid, including shipping, and be in the enviable position of being able to think about would you rather keep your Moabs or sell them and upgrade to Ulfberht?  

The idea of wanting to send them back, this simply is not within the realm of possibility. It just won't happen. Wife and I were listening last night, just gaping at the power and majesty of full orchestra Tchaikovsky 1812 with cannon. Freaking insane! Beyond good.  

Super easy to drive, anything from SET watts up is plenty, my 50 isn't even breaking a sweat while the room explodes with full-on symphony power. And I am talking LOUD! At the volume levels you enjoy, even 4 watts will be plenty.  

The imaging is to die for. Strings full and warm and extended. Just the right bite, never dry and absolutely never stressed. Unless you have a thing for natural wood finish and desire a Faberge Egg more than a speaker, if what you crave is music on a level that is to die for I honestly cannot imagine why anyone would not love these to death.   

But hey don't take my word for it. Read the comments from people on my system page. These are just the ones from the few who bothered to post comments. Got some even better ones from those who heard in person. Like one said best he ever heard. He gets around. Does everything you want in a speaker, on hardly any watts, and all for a bargain price. Eric has experience shipping overseas so that will not be a problem. Check it out. Thank me later.  https://systems.audiogon.com/systems/8367 

Classic Klipsch corner horns or a good electrostatic pair of speakers 

I got a pair of Dynaudio Evoke and they produce the most beautiful sound.Not the best fit for hard rock, but Van Morrison and Regine Spektor never sounded better.

And it's just across the Pond in Copenhagen.
If I could listen to something though, it's the Marten from Sweden. 
It's funny how in the US we want the European stuff and Europe, the American brands look better,