Scryer.

The reason I say scryer is because it's damn convenient. Everything you need is right there next to the inn. Only thing on Aldor tier is a staff vendor on the bum-fuck other side. Also, there is no dying from falling off the elevator.

If you're thinking of repping up all your guys for Aldor/Scryer rewards that's a massive achievement of money and/or time for farming to get all those turn ins. And basically all that's to show for it is some crappy shoulder enchant and a few designs or patterns. It may be more important for your particular characters and what you're going for, so check out the rep/rewards of each.. (+healing? Or +spell crit, for instance).

I only have two accounts and one is Aldor, the other Scryer just for the professions they each have. I choose to get them rep, because I get arcane tomes as well as fel armaments and it works out alright. The quests they get can't be shared, but do occasionally coincide, and it's only a minor inconvenience to fly across the eastern end of SMV to regroup.

Between the two though, Scryer is the most convenient and time-saving in terms of getting repaired/buying arrows/food/and flying down to lower city to get meat and reagents. And it's closer to the FP.