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I have also took down the pink insulation blanket and replaced it with Roxul R14 - Best thing I did for my basement. Def worth the investment. The benefits of Roxul outweigh the "Pink" by far.

Rigid foam has its benefits, but must be installed properly. A friend had an issue in the basement and when they removed the drywall and rigid foam there was mold in the seams.

Best bet is to make sure the outside of the home is sound (no leaks) and then install roxul batts rated for basement.

For a complete air and moisture barrier nothing compares to spray foam. That said as an earlier post suggests it is much more expensive. If you are considering this route, make sure to take pictures as it would command a premium if you were to sell your house.

If this is out of your price range then I would at least consider spray foam for the headers as it is very difficult to get those sealed properly without spray foam.

Good luck!

Unless you want your basement to scream - micky mouse job and definitely no permits, then have an HVAC company relocate the Air Return close to the floor. Then your basement job has the potential to scream - hey,,, pro job.

Back to the question - Roxul would be my choice. You are limited in R-value based on the wall stud size. R22 Comfortbatt for example requires 2 x 6 studs.

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