Can anyone compare and contrast the two?  What are each of their strengths and weaknesses?  Should I drill both or would they overlap too much?

15# Shift:
R2S Pearl Particle
Shape-Lock Core
1500 Polished
RG:  2.55
Diff:  0.055
Mass Bias Diff:  0.022

15# Agent:
Reactor Pearl Reactive
EMC Core
1500 Polished
RG:  2.48
Diff:  0.055
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My 06-07 Arsenal:

Cobalt BOMB Solid (box finish, 4 x 3.5)

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Power Groove Dry/R (box finish, 5 x 4.5)

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Red XXXL (box finish, 4 x 4.5)

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Coming Soon:

Agent

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Shift

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For Sale:
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