I don't live in areas where basements are common.

But just what Karen said and....

I'd go with the prefab 'boards', Block walls leak, you have to seal the blocks against water seepage.

That said, how easy is the access to your basement? Does it allow getting the prefab parts into the basement?

Do you have to open up a wall to get materials in??

Can you afford the extra costs?

What does you budget say?

It's pretty much what you can afford to do when it comes down to it, I'd get an estimate for the block option, an estimate for the prefab stuff and think about what your options are.