I would have to say mine is Runes of Kilmorph. I really like the overall feel of it in-game, and the songs that play with it are really cool. I'm not a huge gold person, but I am a huge science person, and RoK often lets me run the tech slider on 100% while still earning a nice surplus. In addition, a lot of the philosphies of RoK have some meaning to me, mainly the dedication to your work, though the lack of charity is a little offputting. I'm also very parsimonius, which goes perfectly with RoK as well. Heck, if RoK was a real religion, I might actually follow it. Second would probably by Empyrean. While I don't like the music that much(and I think the improvement art style is hideous and needs a makeover), it's still a pretty good religion. As I mentioned earlier, I'm a big science person, so the bonus from temples is nice. A few of the values here ring true as well.