The rides and nighttime entertainment are not as good as
Disneyland but I like the animal shows and the ability to just slow down and see the animals. Don't expect the staff to be as experienced as cast members at Disneyland and know that rides are secondary to animals. I don't want to give you a wrong impression because if we ignore price, I'd say Disneyland is the better park.
But when we include price in the equation, a Platinum Pass to SeaWorld which also allows me to visit other SeaWorld owned parks such as the ones in Orlando costs less than half an Enchant Key and has more perks. As someone who has to travel to all of these parks, San Diego and Orlando have other additional things I'd want to do on vacation while Anaheim does not. Your situation is different from mine.
Check the SeaWorld website for sales because tickets are often like $60 if you prepurchase online and be aware that two rides in the park have an extra $6 fee unless you have an annual pass.