PC Magazine’s Tim Gideon likes the iPad’s keyboard, and even wrote his entire review on it:
First, a word about the on-screen keyboard, since the lack of a physical keyboard is probably the biggest difference between the iPad and, say, a laptop or a netbook (aside from those missing USB ports). As someone who’s all thumbs when it comes to iPhone’s tiny on-screen keyboard, I wondered if the iPad’s larger keyboard would help me master this touch screen typing thing. In a word: Yes. I’m writing this review on the iPad’s horizontal keyboard, in which the keys are large and nicely spaced. (The vertical keyboard is a little tighter, but still definitely useable.) If it weren’t comfortable, I would have abandoned the iPad for my laptop 1,000 words ago.