I have heard them both and in one respects the Thiel 3.7 is better as a point source.
If you invest $3k for the pair if SVS sealed 13 subs for way under $15k total
You have solid low bass the last 1/2 octave is the only weakpoint
On the Thiels,also if you need to play music constantly over 100 db
The Wilson would be better. And your amplifier needs to be high current
With a little character ,not to neutral.they are both excellent speakers
The Thiel even with powered subs is still $10k less. The Thiels are one of the best values per dollar on the market.
If you invest $3k for the pair if SVS sealed 13 subs for way under $15k total
You have solid low bass the last 1/2 octave is the only weakpoint
On the Thiels,also if you need to play music constantly over 100 db
The Wilson would be better. And your amplifier needs to be high current
With a little character ,not to neutral.they are both excellent speakers
The Thiel even with powered subs is still $10k less. The Thiels are one of the best values per dollar on the market.