Although I do prefer AC's entertainment system a bit over WJ's, I still like WJ as an overall airline. We rarely have to wait more than 5 minutes to check our bags and associated kid stuff in on WJ, meanwhile with AC, it's a solid 30-45 minutes. WJ has been excellent with us and our kid, though I have to admit the AC flight attendants on the flights we took this year seemed a bit less crusty than before, maybe it's because our kid is just so adorable she won them over.
I do feel like WJ is starting to nickle and dime, though which is annoying. I've heard that they're phasing out the seat-back tv's completely and going to a rental tablet, loaded with movies, games, etc., or you bring your own. I don't like that idea at all - even though the satellite isn't the greatest, I like having the tv in the seatback, so much easier than juggling a kid in your lap and some handheld device to keep them occupied. At this point, for domestic travel, I'll still travel WJ over AC any day.