Monster caveat:  Before you buy, make sure you know the socket type.  
Apparently, many sinks require adapter plates to fit the new "Socket 775" (aka LGA775 
or Socket T) chips. I'm not sure if any Celeries are on 775 yet, but it's a 
definite watch-point.

I think the Spire products are sometimes sold under the Speeze name (the 
logo's the same, and my Speeze heatsink is both quiet and well-performing on that 
spaceheater known as an Palomino-type XP2000+)