Keurig Reusable Coffee Filters!

So, what's the one drawback to the Keurig Coffeemaker...yep, the fact that the K-Cups can be so expensive!  Well, did you know that there is a Keurig My K-Cup which is a reusable coffee filter that you can use over and over again??   You can put you're own coffee in and reuse the K-Cup!  This has always been one of my drawbacks to the Keurig Coffeemaker as K-Cups can be as much as $.50 each!  Well, if you purchase this attachment which allows you to put your own coffee in, you can buy your favorite brands of coffee and still have the benefits of the Keurig machine!  This is great especially if you like a different coffee than your spouse!  Amazon currently has these Keurig My K-Cups

Keurig My K-Cup Reusable Coffee Filter 5048 is just $16.91 (Free shipping)

Keurig My K-Cup Reusable Coffee Filter is $24.65 (Free shipping with Prime) *Works in Keurig home brewers B40 Elite, B50 Ultra, and B60 Special Edition.  Does not fit B100, B100P, or B2000/3 Keurig brewers

I'm not sure what the difference is in the filters as I don't have a Keurig.  Hopefully your instruction booklet will tell you which filter is appropriate!