I was released not to long ago. Although if you have the money definately go for it. The twin screw is definately the way to go if you want to supercharge your engine.
As a note, this blower has been a dream of mine since it was still in it's design phase. I love it, too bad it's like $10,000
That said, you get the powerband of the M5 V8 engine
"Driving is like a narcotic, an addiction that can take over lives. It ruins people, breaks families apart, and even kills. Itís habit that needs to be fueled. Time, money, rationality, sweat, knuckle skin, and anyone who disapproves are of little importance to a driver, and are often overlooked. Hi, Iím Nelson, and Iím a drivaholic."