DV Hardware has a new review online. This week they checked out the Antec NP-100, a versatile notebook power adapter. A quote from the article:

Notebook makers generally ask a lot of money for replacements so you may end up spending a lot less money by buying the NP-100. Not only will it be cheaper, but you'll also be able to use this adapter for other notebook you buy in the future and the NP-100 may be able to charge your battery faster and more efficient.

Antec NP-100 Notebook Power Adapter Review