i'v eonly done hammer station. just can't be othered sitting in fleet spamming lfg for hours until i get a group
I don't know what server you play on; but I have had no issues finding quick groups in fleet. There are nearly constant BT/Ess groups running during primetime, and Hammer Station and Athiss take little effort to jump into. As the average player level increases, so will the number of people looking for higher instances.