I've not read the Dresden books, but based on "modern day, snappy snarky dialog" with a supernatural twist... I'd recommend Richard Kadrey's
Sandman Slim. There's a second book out now called
Kill the Dead
From what I hear, they may be a little darker than Harry Dresden's world, but the first one is certainly Snarky and fun -- told in a fast-paced, hard-boiled, noir style. James Stark may not be the most "cuddly" hero, but he's certainly bad-ass and snarky.