I have not been yet myself so this is just based on what I've read here, but according to several post comments it is worth the few extra dollars to fly in and out of other airports (in my case one would be Burbank too). However, I'm wondering if the more limited flights will be worth it also. I'm going to sit down soon and analyze all of the different options and book what I deem best for me and my DD and if that means LAX then that's what I'll book, but I wanted to put that out there in case you aren't that analytical type of person as I am. (I tend to over analyze everything. LOL )
I always fly into SNA. To me, the slightly higher price is offset by the fact I don't have to deal with LAX's HUGE airport. SNA is much smaller and easier to navigate. Plus, I use Karmel Shuttle, so it's a cost savings there as it's less expensive to use them from SNA than it is from LAX.
With my home airport LAX is the only feasible option both for being the only airport that has non-stop flights (and only SWA and Spirit have non-stop to the LA area from my home airport) and for cost. All other area airports are just so high in cost and require stops.
We prefer SNA, LGB, ONT, LAX, BUR in that order. Little higher prices at SNA/LGB/ONT is generally evened out when you add in ground transportation.
My first trip as an adult in 2012 we flew into LAX which wasn't a bad experience but it was a long way to the hotel. After seeing about SNA on the DIS boards I tried it on my 2nd trip and I am not sure I will ever go back to LAX. I grew up in Nebraska where we have a tiny airport for such a large city so I am more comfortable maneuvering around SNA compared to LAX. For me, the dollar difference is made up by the cost of transportation and time in getting to the DLR area.