Matt,
Be extremely careful with the AC/DC pin connectors on the Dells. We had 3 Dell laptops (Inspiron 15 series) that all developed the same issue a couple of years ago. All of the power connection issues were within the first 18-24 months of life but obviously not covered under the std warranty. I discovered that the inside DC connectors are poorly designed and aren't soldered well causing them to eventually work themselves loose (on both the connector to the outside and the connector to the circuit board sides) as the laptop is plugged/unplugged. I was able to fix one twice but decided it wasn't worth it on the other two. The one that was fixed has developed the issue again. Dell also uses a third pin on the AC/DC connection to verify that you are only using a Dell AC/DC converter. If this connection goes bad internally (the case in all 3 computers), the computer will not allow you to charge the batteries (even using the OEM charger). We also had 2 of the 3 laptops AC/DC converters go bad during this same 18-24 months of life period
Dell will fix the issue for $175-200 which we opted not to do for roughly 2 year old laptops.
I do have a 8 year old Dell home pc that runs just fine with no issues.
Given these issues, we have decided not to buy Dell laptops unless they make some design changes. We have several 4-5 year old HP laptops with no issues to date.