I think the Samsung Omnia looks better than the Storm. Here are a few of the features that the Omnia has that the Storm doesn't.
Smart Reader: Allows you to take a photo of a business card and extract the information from the card, and save it as a new contact in Contacts. You can also take a photo of a document and convert it to an editable text file.
TV Out Viewer: Allows you to view your device’s display on a TV screen. This is done by using an optional cable to connect your device to your monitor’s TV input jacks. Cable sold seperately.
FM Radio: Allows you to listen to your favorite FM radio station.
Wi-Fi: Allows you to search, configure and connect to a wireless access point.
Widget Bar: Contains user selectable widgets such as Analog and Digital Clock, Calendar, Game Controller, Media Player and other user selectable widgets.
And here are some more features: RSS Reader, Flickr uploader, video editor, Opera Browser, Domain Support,