I think if you do a lot of typing the Bold is going to be a better option. I have an application that allows me type in landscape format on e-mail but it requires you to exit the mail app to use which is cumbersome. I primarily use my iphone to read e-mails and it works great for that but I hate typing on it. As far as internet browsing there is no contest, the iphone blows away the Bold.

Regarding e-mail if your work uses Outlook the e-mails get pushed to your phone instantly (along with your contacts which is really handy.) I use Outlook and gmail (w/ IMAP) and both work flawlessly on the iphone.