Another option is BRD from 40 to 45 to mix it up. I only recommend this if you already have the BRD key though. Since you're ABCDE linked, easy to take pally to BRD and then summon the rest, else I'd say just stay at SM too. I avoid ZF like the plage as for me it's not even 1/2 as fast as SM, I just suck at ZF.
45-55 I'm definitely a Strat Guy, but at 55 I head to ramparts.

Just FYI.
Clear Bael'Gar wing of BRD
- Enter BRD,
- go left, through locked door,
- go straight till "T". (leave your group about 15 yards before T intersection)
- Clear a bit to right, to the door
- Turn around and clear straight to Bael'Gar.