If you've already got the original Apex & it's working for you on the heavier patterns then I would most certainly say that the Adrenaline would be the better choice of the 2 to expand your arsenal a bit.
However if you're seeing deep enough soup that you need an earlier roll & more grip than your Apex, you may consider the Addiction.
The reason I reccommend the Adrenaline is that it will be a good compliment to the Apex & be much more versatile than the Addiction. With the Adrenaline you will be able to cover a wide range of medium/heavier oils, and on a screaming backend pattern where the Apex might roll out, the Adrenaline should make a nice angular move.
Basically it will allow you to open up the lane in more situations than the Addiction will.
One thing, without an idea of how you throw, and what the rest of your arsenal is, I can't give definative suggestions. It would behoove you to put that info into your profile, as many people on here wont even answer people's queries if they dont have a profile.
Good luck!
BJE