Are Guardian Shield Reinforcement Packages "Worth It"? 

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In this video, we take a look at GSRPs and SCBs (which provide a similar but not identical purpose before someone in the comments decides to fight me about it). I rate the modules on an energy efficiency basis. GSRPs are really inefficient compared to SCBs and should only be used if you plan to regen your shield via regen instead of by deploying SCBs. I wouldn't use them on larger ships, especially since larger ships can take advantage of larger slots.
As always if there's something you want me to lab out on a spreadsheet, feel free to post a comment about it. Might take a look at it if someone else hasn't covered it before.
GSRP vs SCB Sheet: docs.google.co...
Efficiency Autosort Sheet: docs.google.co...