Id buy the best you can afford...i use a belkin, cant remember the model, but it was the priciest i found
Reason being was i had a cheapo one plugged into my macbookpro and fritzed the logic board...cost more to repair than its value so had to throw it away. Not saying it was the USB hub but when i plugged it into my back up Macbook Air it immediately closed down everytime I tried, my pro had "blue screened" a few times before it died...
Prolly not related but I still wouldnt take the risk with another cheapo