I'd noticed it beforehand, but our shop got the spec sheets for the Ego and Formula today, and I had to shake my head.  The cores are nearly alike, and definitely similar.  Also similar to the Wired and Messenger Traction.  After they "borrowed" the Fuze and X-Zone cores for the Throttles, and the Quantum core (with a little flip "bowl" added to the bottom) for the Wicked B/R/T, I guess this shouldn't be a surprise.  Everybody else has their new special core.  Storm has the X-Factor core, Ebonite has the TPC propellor core, Brunswick has the Inferno core, and Track has the Morpheus and Phenom cores.  Lane 1 never does much with their cores, but they're all tried and true, and their cores are almost like the ever popular Powrkoil coverstock.  The Throttle/R is pretty impressive, and so was the original Wicked (at least to see people throw, I'm not a Columbia fan), but the last big thing they tried was the Muscle coverstock on the Icon, and that didn't go over so well.  Eh, rant off.
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The weekly signature series, by Hamster.

The local grocery store has an aisle for which the overhead display of the items it contains reads:

Baby Food
Baby Care
Beer

Makes sense to me . .