Your post is a little confusing though. Are you saying that you have two high deductible plan options: one deductible is $1500, and the other has a deductible of $3k?

Whether it's worth it to you or not depends on the premium, but generally for a healthy family the high deductible plan is worth it, although it can be a little tricky to navigate until your HSA is built up to handle your regular healthcare costs. Once you have that built up (if you're able I strongly recommend you max it out every year) you can use that as an additional investment vehicle that is tax free and the money you put in is all tax deductible.