Jonny Valiant

What it does: Works as a PDA and a mini-computer as well as a phone; you can manage calendars, check e-mail, and browse the Web.

Best features: A relatively large screen and a keyboard make viewing calendars and sending and receiving e-mail easy.

Biggest drawbacks: Some models are bulky. Downloading and syncing with a computer can be confusing. Web access is limited and can be slow.

Cost: Many cost $99 with a two-year contract, but they start as low as $60. Monthly plans start at $80.

It’s for you if… You need access to calendars and want to e-mail from anywhere. Maybe your bed. Or the beaches of Miami.