Katrina,
The reason no one is answering your question is that it is a personal thing. No one can say, "Oh, send it to Dan Lazar/Maya/Jodi!" because they haven't read the book and they don't know you.
That being said, here is some info on each agent.
Jodi is probably the biggest YA agent at WH, but because of that, she's not really building her list right now, she has stopped taking e-queries, and she has quite a long response time. She has several superstars (The Twilight series--as you mentioned--being the biggest) and takes on very few new clients. Like many uber-agents, she gets a lot of her new clients from referrals (though Stephenie got her through the traditional query method--it does happen!) In the spirit of full disclosure, Jodi is my agent and Stephenie is one of my best friends--so I'm biased.
Maya does have a focus on YA and is building her client list. She's not huge and famous yet, but with the WH name behind her, she would be a sure-fire thing no matter what. She is known for being extremely friendly and fast. Also, she was Al Zuckerman's assistant for, I believe, two years before taking on her own client list. She accepts e-queries and has a fast response time.
Dan is know for being fabulous and very friendly, but you have to have just the right project for him because he has very eclectic tastes. He sells some really, really awesome stuff and just moved up to the title agent instead of junior agent. (Someone please correct me if I'm wrong. I thought I read that somewhere just recently.) He is also building his client list, though not quite as much as Maya. He also takes e-queries and is know for a very fast response time. (Did anyone see that he just sold a project for Smart B%^&ches?!?!
)
Al Zuckerman takes on projects he likes because he certainly doesn't have to look for clients anymore.
That being said, he is also the president of Writers House and I assume he has many administrative duties along with bing an agent. I don't know a ton about him because he doesn't rep my genre.
So there you go, some info on each agent. Beyond that, you really just need to make the decision yourself.