Help choosing between monitors

Budget: max 500€ (the fewer the better) Resolution: Depends on size.... For me Aspect Ratio: 16:9 or 21:9 Adaptive Sync: I don't really care Usage: Gaming, Ue4, programming

So I am between these monitors (I will go to a multi monitor setup in the near future)

Dell UltraSharp U2515H: 311€ Dell UltraSharp U2417H: 250€ Samsung C24FG70: 370€ Samsung C24F396FH: 180€ LG 29UM68: 235€ Dell U2917W: 415€

NOTE: I don't really care for color accuracy but I do care for good vivid colors and good black that's why I stayed away from TN If I am wrong correct me. I also have never used or seen a panel with 144hz so if it is really worth it please tell me.