postgresql or mysql

Hi, i'd like to know which DB (postgresql or mysql) you advice me, to store accounting and see it thanks to the GUI dailupadmin ? can i find the same freeradius features with this 2 DB ? i don't see 2 features , in postgresql.conf: - readclients = yes -Default profile that i see in sql.conf. are they implemented with postgre ? Thank you for your help. Thomas