Yes, get one. Rather, get an iPad 2 as it is much thinner and lighter than the original. But at the same time I must advise you to hold out until Apple's media event in September where the iPad 3 (or "iPad 2 HD/Pro") is expected to be announced, along with the iPhone 5 with any luck.
I use my iPad a lot, I'm using it right now (CH9 team, please fix the text box on mobile safari!!) it's great for ebooks, reading MSDN, and real-life too, so make sure you get the 3G version, and then get the £7.50/month contract from Hutchinson 3G too.