We just returned from a week at WDW. Yes, there were a lot of things to do/see, etc. However, just to give my honest opinion, I think we are going to stick to DL for now on. I know it's different for everyone, but I just found it to be "too much". My husband is not a big Disney freak, so I think the Disney everything 24/7 was not his cup of tea. Also, my kids are 5 and 8, so although The Magic Kingdom and The Animal Kingdom were great for them, Epcot didn't have much for them (only ended up spending half a day there), and we were done with Hollywood Studios after half a day as well. It could be that I was raised in California, and my family visited Disneyland at least once a year, and I have a certain comfort level with DL, but I just find it so much easier. We will generally go to DL for 5 days with a 3-day hopper, and do a day on, a day off (go to the beach, etc.). We would go for rope drop, stay until about 1-2 in the afternoon, go back to the hotel, take a long break, swim, nap, etc, then return back to the park around 6-7 until close to closing. Then on the off day, we would sleep in and go to the beach later in the day. When we were at WDW, it was "go, go go go go go.......". Because everything is so spread out, park hopping just wasn't in the cards. Also, the threat of rain everyday was too stressful, and having to carry ponchos in my backpack everyday was a hassle. I also like that at DL, you can exit the park and have a bunch of normal (non-Disney) restaurants to choose from if you didn't want to spend $100 on a standard meal inside of the park. If you throw out Animal Kingdom, DL has pretty much everything that WDW has, divided between 2 parks that you can easily hop between. It also has Carsland! My son kept asking if we were going to do the Star Wars stuff, and where was Carsland, and I had to explain to him that we were only going to have 1 day at that park, later in the week. He's used to DL, and getting to do Star Tours every day. Also, having to sign up for Jedi training in advance, and getting there right at opening just to see a 75 minute long line just to sign up? No thanks. We will go back to WDW, maybe in a few years when the kids are older and will get more out of their visit, but at least for the next few years, we will go to DL instead. However, I did really like the magic bands, and would be thrilled if DL had something similar one of these days.
Another thing I really didn't like......parking at the Magic Kingdom, having to fight to get on a tram (I mean really, people were really acting like animals over this thing) just to wait in a herd of people to get on that ferry. That must have been an hour and a half process. In Anaheim, you might not have dozens of Disney owned properties to choose from, but you have other options like Marriotts, Hiltons, various boutique hotels that have access to a trolley that drops you off right in front of the park entrance, and averages anywhere from 5-10 minutes. I find that system to be less than a hassle, and on top of all of that, there are many hotels within walking distance as well. I have done both.
Some people who always go to WDW might think DLR is lame because it has less, but for me, and for my family, it's a better fit for us.