Kisame is very solid, but still pricey in the game. He straight up shuts down most blitz teams by removing barrier, stealing chakra, and stopping r1 mysteries, and tanking away in the front row. That said, higher initiative is a must in the current meta because of all the susanoo itachis and masked men running around. He'll be seeing play for quite a while in the future, and honestly all of them will.

All of that said, springing for a minato (either one really) will never do you wrong. Both of are powerhouses that are build-around and can get to absurd heights of damage. (I'm talking 10-12k damage off of crits, and that's against players of similar power if you build it right).