I can second everything you said, although I've only tried the Desperado.
That ball is unlike any urethane ball I've ever thrown (Pink, Blue, and Black Hammer; Natural; and Liberator). First, it handles more oil. Seismic actually designed it to handle short oil tournament conditions, so it's no surprise. Second, the carry is fantastic. None of the corner pin issues I've seen with other urethane. Maybe it's the strong asymmetric core, which distinguishes it from all of the other urethane releases out there during the last few years.
I just ordered the Solaris Blackout and can't wait to try it out. The low RG and low differential core makes it different than other company's balls too.
Seismic seems to be putting out stuff that fills niches in a bowler's arsenal that most other companies aren't doing.
