I also live on the west coast and usually go to DLR. This September we're (girlfriend and I) going to WDW for the first time, the reason for this is that on the disneyworld.com site airfare to Orlando from Seattle is identical in price to that of airfare to Los Angeles available anywhere, if not cheaper. This airfaire though was only cheaper on the disneyworld site, when I went to any
travel agent or online booking site (expedia etc) it was far more to go to Orlando. WDW must buy huge blocks of seats and sell them cheap to get you to their park. Coincidentally, quite often airfaire is the cheapest for me on Disneyland's site as well.
As for the other costs, the Hotels in Florida are far cheaper hands down. I think it is just because there are more of them. But you can stay at Deluxe in Florida for the price of the Paradise Pier in Cali, where we usually stay. Moderates and Value are both so dirt cheap I'm amazed. Not only that but most of the Florida Hotels are newer, and offsite in California is never great, its at best tolerable. Not to mention the fact that you're located right in the center of a not so nice area. I can not stand to stay off site in California so it is really not an option for me to save money that way.
The park passes were marginally more in WDW than DLR but the dining package more than makes up the difference. I'm not sure if the airfaire was just a one time fluke or whatever, but we were originally planning to go to DLR this autumn, but upon seeing that WDW was actually cheaper we decided to try something new. We had our travel agent book through Walt Disney World over the phone and got the exact same price as their website quoted, I believe it was actually 23 dollars less for some odd reason.
To answer your question though, if things were as they were for you, that is DLR far less expensive and going to WDW would cost us future trips, we would of gone to DLR, both of us love it there and the weather seems more my style. But we couldn't pass up the chance of trying WDW. I think 7 days at WL cost us 1400ish with dining (which was free due to the promo), flights and the park pass including water parks and hopping etc. Paradise pier would of been 1535 for 6 days I think and where we wanted to stay, the Grand Californian, was about 2000. These are rough guesses, the trip is bought and paid for but the savings was pretty distinct particularly given the extra distance we are flying. One other cool thing we did was grab a red eye, this might not be for everyone, but we leave at 11pm and arrive at 630 am. No wasted days and I'm used to travelling so it won't bother me, my girlfriend will most likely be sleepy, but we usually take an afternoon break anyways.