Right now I'm torn between Akatosh and Arkay. I really like the idea of Akatosh's fast travel ability, even though it probably won't save me more than a couple days at most on a long trip, just because I don't like having to worry about not getting back from quests in time. Also, from a roleplaying perspective I think Akatosh is the Divine this character would most likely follow, if he were to follow one at all. (Arkay is a close second, though, so it's not like it would be completely out of character for him.) I'm seriously tempted by Arkay's quick access to potions, though. Also, Arkay would allow me to train backstabbing, which I imagine has got to be a pretty tough skill to train, and I'm trying to avoid the Thieve's Guild or DB for now in case I decide to become a vampire, while Akaosh doesn't give me any skills I can't get trained elsewhere. However, it also occurs to me that people it Arkay's temple will heal you just for talking to them even if you're NOT a member, so joining the Akatosh chantry would double the locations where I could do that...
Bah. I'm too indecisive for my own good sometimes. I'm loving that this game has enough options to make me worry about which one to pick so much, though!
Anyway, a couple specific questions that might help me make up my mind:
1) How much of a difference have you all found Akatosh's fast travel ability makes?
2) How rare do you find Restore Power potions tend to be? If they're almost never in stock or are too expensive for a low level character, quick access to potions might not be such a big deal...
Also, if anybody really likes one of the other temples, please let me know why!