CPU coolers what one is really the best!

sometime this summer i am going to upgrade to an aftermarket cooler for my I7-920
seems the I7 cooler are a little tougher to get a cooler for, getting better slowly tho

xigmatek has had some really good reviews for the I7
http://www.ultimatepccooling.com/xigmatek-hdts1283v-dark-knight-hdt-universal-cpu-co1283.html

here is a good site for a variety of socket 1366 coolers
http://www.heatsinkfactory.com/intel-socket-1366-cpu-coolers.html