The Panaflo Orb (aka HP Polarlogic, aka Arctic Circle) is quite a good heatsink. It was the answer to my search for a GOOD heatsink to use with my Melcor peltier running at 5v (at 12v, the heat was way too much for any heatsink). Before I had this orb heatsink, I was using a Globalwin FAB28 with separate hot and cold plates to cooly my Slot 1 Celeron (barely got the job done). With the Panaflo orb heatsink, I was able to get rid of the hot plate since the heatsink has a decent thickness of metal already for the contact surface - the result was a very cool CPU... so cool that after moving home to humid NJ from school in upstate NY, condensation formed and dripped onto my GeForce *ZAP*

I sold the heatsink already and got a Golden Orb. I'd prefer the Panaflo Orb over the Golden Orb, but there simply wasn't any convenient way of mounting it onto an FC-PGA processor. I was using 1/8" thread to tie the heatsink-peltier-coldplate-Celeron together, then twisting wire around the string to increase the tension. Also, I'd have to find some good insulation material before I tried using the peltier with the orb again
Anyway, the Golden Orb is a sufficient knockoff of the Panaflo Orb/HP heatsink unless you really need the extra capability. Keep in mind that you'll have to find a way to mount the Panaflo Orb.
(am I rambling yet?

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