I have been 29 for quite a while now and it appears it is going to stay that way.
I completed the raid on hard twice, only to be rewarded with duplicate items repeatedly. I then decided, maybe an exotic engram will get me that helmet I need to hit 30. So I bought 2.
Both were the -blam!-ing insurmountable Skullfort.
Out of everything, the stupid disco helmet twice.
Wow.
So done.
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I bought the titan striker helm from xur, then bought the engram and got the defender one. Lucky me.