Myself, I usually have three with me on raid nights and two most other times:
Crystal Pulse for healing (raid nights)
MGSW (all the time - used for bosses)
Netherwing Defender's for AoE farming
I'm too lazy to finish reping up Sporeggar but when I finally get there, I'm buying 2 PLGs and getting them spiked for sure. Thos will live in my bag as well

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Some people call me crazy but I like to think of myself as a freelance lunatic.
Ann Coulter is a Cylon