Unbiased opinion? Uf, doubtful you will get that here. Folks who have hardmods will only tell you success/failures of the chip they used. All I can tell you is 3 weeks ago, I started the process. I chose QOOB PRO based on my research, and now have a successfully running modded GC.
i cant believe that this problem is still going on! If moneys the problem get the cheapest one, If ur a programmer get the Qoob, If ur a player get either! Simple
Actually, I'm surprised no one ever asks about the Ninjamod chip since it's $30. The bios is great and it even has 16Mbits of memory, something that the qoob Pro has and the Viper doesn't.