Beat me to it. A T2 with the extra overlap will close the gap between these 2 cams to the point where it may not be worth the shorter spring life. I'm going with a h/c setup and will be going with this cam or something similar from EPS. IMO no use going with the super high lifts when the majority of the intake manifolds out there won't support any head flowing over 290cfm.
Check out these dyno results with an EPS 230/234 0.600/0.601 111LSA +2 with ported 5.3's still on an LS6 intake.