im so confused with all the manufactures, there are so many but selling the same product can anyone tell me the difference? planning to get the R9 270X since most people say that this is the best bang for the buck VGA card so can anyone tell me which is the best among this manufactures - MSI Radeon R9-270 2GB DDR5 256 Bit - Gaming/Power Color Radeon R9 270X 2GB DDR5 256 Bit/Sapphire Radeon R9 270X 2GB GDDR5 DUAL-X/HIS Radeon R9 270X ICEQ 2GB DDR5/HIS Radeon R9 270X ICEQ X2 TURBO 2GB DDR5/Sapphire Radeon R9 270X 2GB GDDR5 VAPOR-X which one should i get? thanks for the help!