I have Thiel Speakers - the 3.5s - and am currently using the Transparent MusicWave speaker cables with good success. Very open and detailed - you might also want to go "upscale" and look into the Transparent MusicWave Plus and/or MusicWave Super - both great speaker cables.
I would recommend the Audioquest. As my alternative I can only strongly advice you to look into the HMS Grand Finale cables (I have become their importer). They can compete with all the super top cable brands for far less money.
Christian Brouwer proud importer of HMS extreme audiophile cables for down-to-earth prices
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