I agree, 1.2RC3 is wonderfull, 25 euros well spent! The search is also great, except for the criteria.
My temporary solotion to limit the options and make it clearer for the user is:

in the language file (components/com_comprofiler/plugins/language/default_language/default_language.php) I added:

DEFINE ('_UE_NO_PREFERENCE','Search has to match:');
DEFINE ('_UE_MATCH_ARE_EXACTLY','');
DEFINE ('_UE_MATCH_INCLUDE_ALL_OF','all words');
DEFINE ('_UE_MATCH_INCLUDE_ANY_OF','one of the words');
DEFINE ('_UE_MATCH_EXCLUSIONS','');
DEFINE ('_UE_MATCH_ARE_EXACTLY_NOT','');
DEFINE ('_UE_MATCH_INCLUDE_ALL_OF_NOT','');
DEFINE ('_UE_MATCH_INCLUDE_ANY_OF_NOT','');
DEFINE ('_UE_MATCH_IS_EXACTLY','');
DEFINE ('_UE_MATCH_PRASE','');
DEFINE ('_UE_MATCH_ALL','all words');
DEFINE ('_UE_MATCH_ANY','any of the words');
DEFINE ('_UE_MATCH_IS_EXACTLY_NOT','');
DEFINE ('_UE_MATCH_PHRASE_NOT','');
DEFINE ('_UE_MATCH_ALL_NOT','');
DEFINE ('_UE_MATCH_ANY_NOT','');

in the file administrator/components/com_comprofiler/plugin.class.php I deleted some things:

case 'text':
$choices = array( 'all' => _UE_MATCH_ALL,
'any' => _UE_MATCH_ANY,
);
break;
case 'singlechoice':
$choices = array( // 'all' => _UE_MATCH_ALL,
'anyis' => _UE_MATCH_IS_ONE_OF, // _UE_MATCH_ANY,
);
break;
case 'multiplechoice':
$choices = array( 'all' => _UE_MATCH_INCLUDE_ALL_OF,
'any' => _UE_MATCH_INCLUDE_ANY_OF,
);

I hope this is of some help for the moment. Please make a backup of the original files!!! Just in case...

An option to not use the criteria would be great!