Probably daedra, though dunno which one offhand. The Eight/Nine Divines are sort of like my view on most modern institutionalized religions--a lot of shock and awe, but not a whole lot of provable doing stuff. Great for the faithful, awful for the skeptics. The Daedra definitely do stuff (hell, you actually talk to them), give you shiny new things, most definitively act within the world in observable ways, and just seem more personable/cooler. The Tribunal, as a few people have said, is insane; Sotha Sil is a recluse and a steampunk, Almalexia is just plain goddamn nuts, and Vivec is too self-righteous for me. Sithis seems more like the Greek "personified concepts," and while certainly creepy and mysterious, seems like more the sort of thing you just passively acknowledge as "huh, that's a thing". Night Mother...eh. Talos Cult is a maybe--the guy was like Teddy Motherfucking Roosevelt for Tamriel.