Vortex vs. Econ in-line fan,which one to get

Well im about to buy a fan off ebay and i want to get some feedback befor i do.Im wondering if one of those cheaper exhaust fan will work just as good for me.I have a 8x4x7 grow tent with a 1000 watt hps thats needs to be cooled before i can get started with my grow.Im going to buy a 6" fan to cool my lightWill the Econ fan work just as good as one of those name brands.Ebay has about 3 different kinds green,blue and black ones,the green ones are the cheapest but not cheap $119 for a 6".So will i be alright if i buy one of these cheaper ones and if so is there anybody out there that has purchased one of these fans.I dont want to waste my money on something that will not do the job for me.

Thanks for the help
T

i would go with the vortex a 1000 makes alot of heat and i dont think a econo fan would do the trick, mabey use the ecno fan for your intake.

I have both the Vortex fans and the Eco fans, as I used to own a hydro store. The Vortex fans offer a higher CFM rating, with higher quality internal components. They make less noise compared to the econo fans. An econo fan will work fine for a single 1000W though.