Rear Upper Spring Perch For Coilovers? S70

What's the recommended method these days for the rear upper spring perch when converting to a 2.5" coilover spring? I saw the hockey puck method, as well as the TKI aluminum pieces. Which is preferred and why? This is just a daily driven street car, 98 S70 T5m

THANKS

edit--- should mention that I've already got lower adjustable perches, just looking for upper recomendations