Most people will say "OMGGG, GET IT" simply because all builds have revolved around it.
I personally do not have it, and I'm in the same level area as you, and I do not regret not having it. I have had an easier time leveling up since I went for Critical and Double Shot first. I'm also actually considering not getting Eye of the Amazon, and just up Focus.
In the end, it justs matters what you want for your character. Don't let someone tell you how to build it, but if someone provides useful advice, you might want to consider it when it comes to deciding.