I prefer the third person omniscient past tense POV, but every now, I'll slide into first person present. My super crazy dark stuff seems to always be written in the present, where as my run-of-the-mill angst is past tense.
I've even tried a third person limited present tense once. It went nowhere, but I really loved the overall feel of it. I'm considering re-working the basic original concept into fitting into a larger project, since it used the same characters.
The dialog:action ratio is also highly dependent on what's going on, too. Since a lot of my writing takes place inside a character's head, I'm not only doing words and actions, but also a lot of snarky side remarks as well. If something super crazy action-oriented is going on, there's almost no inner monologue, and little talking. But then, there are also scenes where a lot of conversation is going on, with weird actions just as character points.