2004 Passat 2.8L Timing Belt Kit?
 

I am new to this forum and new to working on my car. I am trying to change my timing belt with one of my friends who knows a lot more than me, and was wondering what kind of timing belt kit i should buy. I found these on ebay but wasn't sure if on is cheap quality or if it doesn't really matter..?
a) Gates Timing Belt Water Pump Kit Audi A4 A6 S4 Allroad Quattro VW Passat 2 7L | eBay
or
b)98 05 Audi A4 A6 Volkswagen Passat V6 2 8L DOHC Timing Belt Water Pump Kit | eBay
or
c)New 98 05 Volkswagen Passat Audi A4 A6 V6 2 8L DOHC Timing Belt Water Pump Kit | eBay