For me this festival has the best lineup in Europe for years now but I never considered going there because I don't find location attractive enough which is funny because while doing Sziget I didn't have any time to explore Budapest. 12 hours at festival per day and the rest is sleep and recharge.
My in-laws did a few years ago (accidentally, they saw that premium was only slightly more expensive than normal tickets and didn't realise it was a bolt-on until after they'd bought them). They said it's not worth it, the food was better outside the VIP bit, they still struggled to get seats and see the stage.