I Like the RC Lander 90mm EDFs, they use metal fan blades and seem to be of Very Good Quality, with out burning a hole in your wallet
RCLander New Dynamic Power Series 90mm EDF
http://www.shop.rc-electric-jets.com...DPS90-1A19.htm
http://www.youtube.com/watch?feature...&v=-IZ04S5rjWM#!