Tekton versus Klipsch

You have to try a vintage american speaker made prior to 1981 they are the most tube amp friendly speakers on the planet and if you can hear one prior to 1965 you will have even better sound with tube amps and make sure the speakers you are looking at are at least 8 ohms but a 16 ohm model would be even better yet.

Klipsch with Class A and a tube preamp.  Very nice.  Or you could go all tubes.  Room treatment and proper setup makes a very appealing setup.

Ah the Tekton debate, seems never ending.  I’ve never heard them so can’t comment.  If the OP is looking for high efficiency speakers Omega’s referenced earlier in this thread are fantastic.  The Build quality and cabinetry work is beautiful.  Louis who is the owner is extremely knowledgeable and available to direct you to what would fit your needs the best.  I’ve heard some of his single driver designs which is his claim to fame, really great speakers.  I have a retro designed speaker, Dyna Ten’s.  Many would scoff at the simplicity, 2 way design, paper cone, no crossovers but they sound fantastic with my Tube amp and a bonus is everyone comments on how beautiful they are.  I’ve had 4 sets of towers prior from some high end speaker company’s and never have gotten a mention on their look unless it was to point out how big or intrusive they might have been.  Give the Omega’s a look, extreme value relative to the build quality, personal touch you’ll get.

OK let's head out into left field.  I own a pair of factory custom rosewood Klipsch Heresys. They are very neutral sounding but not very engaging and surprisingly they need a little power to get jumping. So even though they have a high efficiency rating they still need a little power to sound their best. With low volume settings the balance drops away. 
My favorite tube driven loudspeaker has been the Triangle loudspeaker line. A very easy load. I have owned the Celius and now the Antals. I kick myself for letting the Celius slip through my fingers and I have repeatedly tried to buy them back from my buddy. Hard to find but great with tubes.