How to delete data from Sharepoint List using API?

Normally once you delete the data from the list it goes to Recycle Bin. During reading SDK I came to know about a method 'Delete' which deletes data permenently. does not send it recycle bin. So now we have two different approaches to deleting the list data.

Approach1 - Delete Data Permanently:

using(SPSite siteCollection = new SPSite("http://portal"))

{

    using(SPWeb site = new siteCollection.Openweb())

    {

        SPList listdata = site.Lists["MyList"];

        for(int i=listdata.Items.Count-1;i>=0;i--)

        {

            listdata.Items.delete(i);

        }

    }

}

Approach2 - Delete Data and it goes to Recyclebin:

using(SPSite sitecollection = new SPSite("http://portal"))

{

    using(SPweb site = sitecollection.Openweb())

    {  

    SPList listdata = site.Lists["MyList"];

    for(int i=listdata.Items.Count-1;i>=0;i--)

    {

    SPListItem olistitem = listdata.Items[i];

    olistitem.Recycle();

    }

    }

}