Having some of the KGs are the best way to become stronger. Jay doesn't tell you the whole story, with me electing not to have every KG.  To make a long story short, I don't have the final two sharingans. However, sharingans only give you extra turns and no extra strength or defense, so its the most useless of the KGs. I elected to just get two of resets of the sharingan, which was enough turns for me, and just go after DKs.  It's best to do whatever you feel is best for your account. When I stopped concerning myself with what others thought about my account I made my best decisions. 
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