I don’t think there’s any better combination, really (although the resulting SMS messages are usually best not to be read the morning after). MobileComputing’s got a decent article on the Karl Strauss Brewing Company who’ve paired their sales team with the strength of the BlackBerry.
“Now, field reps enter CRM data into their BlackBerrys through Salesforce.com’s Apex Mobile to create real-time orders from the customer site and to synchronize data. The brewery customized its Salesforce SFA and Apex Mobile applications and also used partner apps from the AppExchange directory to integrate data from Microsoft Dynamics GP with Salesforce. The integration made for a single, centralized source of customer data for sales operations.”