A laptop computer or simply laptop (also notebook computer, notebook and notepad) is a small mobile computer, typically weighing 3 to 12 pounds (1.4 to 5.4 kg),
http://en.wikipedia.org/wiki/Laptop

I wouldn't presume to recommend a laptop just as I wouldn't recommend what house to buy without knowing more about how you intend to use it.
Some considerations.
1. Spend on the warranty. If you are going to invest in anything in a laptop spend on the warranty. Most dealers or resellers of laptops have locations that you can take your laptop to and have it fixed within 24-48 hours even though the company you bought it from is out of state. Some sellers will ask you to mail your laptop back to the manufacturer for them to fix it which can result in longer time delays and the equipment could get damaged or misplaced in the delivery. Risk management consultants have stated that companies that lose power for 10 days run a high risk of going out of business. You do not want to lose power or access to your business for an extended period of time especially if you operate it from your laptop.

2. Size. Size does matter for those who travel frequently or cannot carry excessive weight. Large screens weigh more. Small screens weigh less. DVD/CD-Rom drives weigh more too. There are laptops that do not have built in disk drives but allow for plug in USB 2.0 to connect the external DVD/CD player to use.

3. Dual processors speed up activities. A dual processor executes multiple programs at the same time. Multi-task users will appreciate this feature if you are uploading and downloading files and programs from the internet while checking email or writing documents. Go with the dual processor if you can afford it. You will thank me later.

4. Memory. Most of us will never have a problem with memory unless we store large amounts of multimedia files on our computer. The multimedia family includes: music, pictures, videos, and movies. Memory comes cheap on newer computers additional memory is always a good investment. Most new laptops will come with 80 - 100 GB (gigabytes).

5. RAM. If you have a high RAM then it will be able to retrieve information faster on your computer. It is consider volatile memory since the information is stored temporarily and will be lost if the power is turned off. Think of information stored on the clipboard in Microsoft Word as volatile. 512MB or 1GB of RAM is recommended with newer computers.

6. Tablet or regular. Only the tech savvy will appreciate the tablet PC since you can write on documents and email them to a client or prospect. If you will not use the tablet then do not buy one. Just because you can sign on the screen doesn’t mean that you will use it. Tablets can cost up to $500 more than a traditional laptop.

Similar to the home buying process, laptop buying is not much different. Some manufacturers will allow for 100% financing and throw in additional upgrades and options. Some advertisement will be “If you act now then you may qualify for additional printer.” Knowing what questions to ask at the right time will save you hundreds of dollars. These considerations will give you a start to becoming a more informed consumer. Great websites that I have seen for choosing laptops are http://www.tabletpcreview.com/, http://www.epinions.com/, and http://www.laptopadvisor.com/.
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