Alright question, I'm a druid tank sitting at 406 defense with 15 resilience to get me the rest of the way. The 15 resilience is the result of the res. enchant to my chest. Now that there's a defense enchant, I'm wondering if I should get this one to replace the res.?

I know there are different benefits to each, frankly I'm horrid at math, and I just want the jist of it. 15 res does cap me, so sacrificing that for 15 def, would it be worth it and would I still be capped?