My top 3 pairings are (from 3 to 1): JelEr (Jellal X Erza), GaLe (Gajeel X Levy), and NaLi (Natsu and Lisanna)
Two more things: there is no personal bias towards the second one, and no hate bashing from radical NaLu fans (you have no idea how much those people piss me off).