^ I've also owned both. In my experience the collapsible circles (Costco in my case) are more convenient but it's no contest for keeping the interior cooler and presumably protecting the dash with the foldable/rolling sunshade.
On a few hot days the interior was actually fairly cool. But my side windows are tinted as well....
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GT3 Recaro Seats - Boxster Red
GT3 Aero / Carrera 18" 5 spoke / Potenza RE-11
Fabspeed Headers & Noise Maker
BORN: March 2000 - FINLAND
IMS#1 REPLACED: April 2010 - NEW JERSEY -- LNE DUAL ROW
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