Clark's new Sprint femtocell has really improved his cell reception at home. He and his wife are now getting 9 bars on their cells! The ads show 5 bars -- who knew you could have 9?!

Sprint's femtocell retails for around $100 and there's a monthly fee of $5 for the service.

It's similar in concept to T-Mobile's HotSpot @ Home, which Clark recently discussed on the show.

With the T-Mobile solution, you can ditch your landline, transfer it to T-Mobile and get home phone service via your cell with your pre-existing number.

Now let's take a closer look at prices. With Sprint, you have to pay an additional $10 for unlimited calling -- and that's just for one cell. So if you're a family with 2 cell phones, you could wind up paying $25/month ($5 monthly fee + $20 for 2 numbers) vs. $10 for unlimited calling from HotSpot @ Home.

In related news, Clark routinely trashes "add-a-cell" plans because of the danger they pose to your wallet. Watch out if you're a parent and you add a teen to your plan. Thankfully, both Verizon and T-Mobile now are setting up parental usage controls online. They can be used to prevent your teen from subscribing to costly 3rd party text messaging services.