I've found it's hard to have an urban fantasy without having vampires in them, which I'm rather depressed about. Looking over my own bookshelves I've got the Blue Blood series by Melissa De La Cruz. Pretty good, with a nice twist on the vampire idea. They're not exactly well written, but they're still pretty good. There is one scene in the first book that is slightly risque, but I'd give it a pg-13 rating.
The other series I really, really, really LOVE is The Mortal Instruments by Cassandra Clare (of the Very Secret Diaries and Draco Trilogy fame. One of the best Harry Potter fanfics I've ever read. Although, if you are offended by snogging or yaoi, don't read any of her fanfic stuff.) Those are really clean, and while by the end of the firsts book you're wondering if you should read the second book because one of the plot twists kind of royally sucks, I personally think that it will work itself out without being ackward. (Can't say much without spoiling it, but I can say that the stuff to back up my theory is in the second book.) It's really clean with some kissing being the most of it, but it's not the mindless stuff you'll find in a lot of your YA and Urban Fantasy. It's really fresh in some of it's originality, and I love her snide humor.
I know it's a bit more childrens then YA/Adult uf, but the I've enjoyed the Artimus Fowl series by Erin Colfes. It's something that is set in the modern times, and doesn't involve a single vampire, which makes me happy.
Princess Nevermore by Dian Curtis Regan is really good. If you get an older copy it's really dated, and when they tried to update it some of the stuff didn't translate well, but for the most part it's pretty good. Again, no vampires, although there is a "faerie tale princess" type character. But still, I rather enjoyed it.
I would also suggest anything by Amelia Atwater-Rhodes. I don't know if her shapeshifter series is uf, but I know her vampire ones are, and those are my favorite vampire books. They're all really short, but they pack a lot in them. The first one was written when she was like 13 or 14, and it's actually really well written considering. The characters aren't as flat as you might expect, but you can't go into those books expecting them to be litarary masterpieces. Just some quick, fun reads.
If I had to say "You have to try" of those, I would suggest first Cassie Clare (not sure about the spelling of her last name. I'm too used to spelling it "claire" which was her ffs name), Amelia Atwater-Rhodes and Princess Nevermore.