There must be a hundred of different laptops out there, so many different models, so many different options, but it would be helpful if you could give a few more ideas of what sort, so to narrow it down, after all it will be your laptop, so it got to be how you like to use it.
For example:
First of all, are you thinking of Apple laptops or Windows-based laptops?
If it's Windows based laptops, are you thinking of just the standard laptop or one of those sort where the lid can come off and becomes a table?
Do you want a laptop or Netbook? Laptop tend to be proper laptop and big enough to have a built-in CD/DVD drive and in most cases have number pad, while Netbook on the other hand, tend to be like a scale down version of laptop, no room for built-in CD/DVD drive.