<i>(1)<br/></i><br/><i>·He has a different opinion from mine.</i><br/><i>·He has a different opinion from others'.</i><br/><br/><i>(2)</i><br/><i>·He has a different opinion from me.</i><br/><i>·He has a different opinion from others/other people.</i><br/><br/>Are the examples of #2 grammatically OK, or not?