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While the Bulk API supports several more records per transaction (5,000 as opposed to either 1,000 or 200 I can't remember which at the moment), you do have to be darn sure your triggers can handle the huge volume of data. It's also a great way to reduce the overall numer of requests if you're pumping several hundreds of thousands or millions of records through data loader. Through a simple google search, here is the list of Bulk API limits: https://developer.salesforce.com/docs/atlas.en-us.api_asynch.meta/api_asynch/asynch_api_concepts_limits.htm
That's an awesome link.