It depends. Since you are looking for something portable, I'd say go ahead and get the iPad 2. But the iPad 2 is bigger than some laptops, and if you are only looking for a small little thing to carry around to surf the web, I'd say get one of those small Acer laptops. They are useful, and can do just about the same things an iPad can do. It's up to you
An iPad is not the same as a laptop. It does not have a hard drive. Therefore you cannot do tasks such as word processing and data manipulation. The iPad is great for email and surfing the net. That being said, I LOVE my iPad!
If you need to do some business applications, and not just surf and watch movies, then I suggest you take a look at the new Think Pad Tablet by Lenovo. It has a keyboard folio case that gives you a handy option to the virtual keyboard. It also offers a means for handling MS Office docs. It also has a few ports, and a docking station. It's worth checking out.