As for the black DI. I didn't feel a power gain at all, just feels the same to me.
I did a couple months of searching and i found a guy who had this DI on his red top 9-3 for more then a year, and his car runs perfect.
I only got it for $50 so its not a huge loss if i sell it and get a red top one again.
As for the SSQV, i like it. It has a loud pitch noise. I like it better then the greddy i had.