Hi !!
My Opinion ??? It is the best tool for a MySQL professional.
It is very, very useful !
To use advanced authentication follow these steps...
Edit the file config.inc.php and change the following lines:
------------------------------------------------------------
line 45 - cfgServers[1]['stduser'] = 'your_user'
line 46 - cfgServers[1]['stdpass'] = 'your_password'
line 47 - cfgServers[1]['adv_auth'] = TRUE;
Insert a user on mysql database: (table user)
-----------------------------------------------------
USE mysql;
INSERT INTO user(Host,User,Password,Select_priv)
VALUES("localhost","your_user","your_password","Y"

;
THAT's ALL
Hope it helps you !
If you get problems .... let me know !
Regards
Claudemir F. Martins