Updating from s21+: Should I profit from the discount now or therebwill be better deals in 2/3 months?

Hi guys,

Im at breaking point. I have an s21+ 128gb exynos. After 3 yrs i think is time to change. The phone got laggy, apps and the screen sometimes bug sometimes, the storage is almost full so i have to make sacrifices to keep it running. Battery last me until 2pm then it's cooked. I think is time to change it. This is how low I can get the prices. Should I go for the ultra for the 300€ price difference? Will samsung give us other good deals like this one or this one is a nobrainer?

Thx to everybody for the answers!