<p>I am also at 400+ PL and I wouldn't recommend to keep your gems for only 1 sugo, even if anniversary one. You will get a ton of dupes and the legends you will get if luck is on your side are not worth the good RR you missed by not pulling during the sugos you skipped when they were boosted. For my part, my rule is to never pull more than 6 multis. I only pull in sugos if I am interested in the boosted RR (not the legends).
</p><p>So far, when I did multis when 2 or 3 RR I was interested by were boosted, I almost always got them after 2 or 3 multis. And now, the guaranteed reds are up at each sugo.
</p><p>Concerning gem management, I would recommend to use a few (4 or 5) when a good raid is on. Usually, for colos, I don't gem and just farm with natural stamina. It is most of the times enough to max or at least get the cooldown to a useable level. And if the unit is really appealing for me, I might use a gem or two (if it would fit in the teams I use most).
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