I spoil the birds really, it's no wonder I have so many in my garden. I make up my own mix, I buy a bag of 50/50 budgie and add red millet, mealworms, sunflower hearts plus sunflowers in shell, groats and insect suet pellets to it.
I feed fat balls now and again but they are a bit picky and the fat balls are the only things that don't always go. They love the insect suet pellets though.