I prefer Sardior, but I'm a minority.
Me: "Hey guy, how's it going?"
Bahamut: "Have you really done enough for your fellow man? Can I impose upon you to help out with this one minor quest to a godsforsaken part of the world to do this one suicidal task? If not, no biggie, I'm sure the End of the World won't be too painful for all of us..."
Sardior: "Oh, didn't see you there! What do you think of these drapes? Do they complement the lair? Or do you think some nice walnut paneling would look better?"
I mean, that's one way you can view it, but (at least in his 4e incarnation) it very much sounds like Bahamut is more like "Have
I myself done enough for mortals?" Keep in mind, in that continuity, he is the
only deity actively trying to work out a better solution for the people stuck without an afterlife besides "sorry guys, it sucks to be you, but we can't fix the universe." Bahamut has commissioned literal
divine asteroid ark-ships to sail the astral sea and provide comfort and security to
anyone stuck without a proper afterlife, regardless of whether they were among his flock or not.
We could just as easily re-frame it as
Me: "Hey guy, how's it going?"
Bahamut: "Quite well, quite well! Oh, there's always a problem
somewhere, but when has that never been the case? I would be happy to get you something, or if you like, you may join the games outside--though be forewarned, death means much less to Celestia's denizens than it does to mortals. And if you're in the mood for something more adventurous, I am always looking for adventurers of good and stout heart."
Sardior: "Ah, welcome mortal. Unusual to find you in my domain,
uninvited, but I am nothing if not a gracious host. Perhaps you would fancy a debate? I am told it is considered quite a prize to best me on the field of words among at least some members of your kind. I would of course prefer a telepathic debate--simultaneously quicker, yet richer--but I doubt you have the talent for it."
Which generally frames the problem I have with most people that roll their eyes at Good (and particularly LG) deities. It's this circular assumption that they have to be preoccupied with Saving Everything Always, so they're stuffy and boring and presumptuous and guilt-triping, leaving no room for anything except Saving Everything Always. What prevents Bahamut from being a pleasant host? Sure, he may not have the specific
reputation of being an excellent conversationalist that Sardior does, but that doesn't mean he's a guilt-tripping, demanding "nice guy" that imposes on everyone he meets.